L. Adrianson, Gender and computer-mediated communication: Group processes in problem solving, Computers in Human Behavior, vol.17, issue.1, pp.33-42, 2001.

I. Ajzen and M. Fishbein, Attitudes and the attitude-behavior relation: Reasoned and automatic processes, European review of social psychology, vol.11, issue.1, pp.1-33, 2000.

G. Allport, The historical background of social psychology, 1985.

, Handbook of social psychology, vol.I

E. A. Amato, Immersion dans un monde virtuel : jeux vidéo, communautés et apprentissages. Observatoire des mondes numériques, 2006.

M. L. Antheunis, P. M. Valkenburg, and J. Peter, Getting acquainted through social network sites: Testing a model of online uncertainty reduction and social attraction, Computers in Human Behavior, vol.26, issue.1, pp.100-109, 2010.

L. Auzoult, La conscience de soi et les influences sociales. Psycho Sup, pp.131-140, 2012.

G. S. Bahr and R. A. Ford, How and why pop-ups dont work: Pop-up prompted eye movements, user affect and decision making, Computers in Human Behavior, vol.27, issue.2, pp.776-783, 2011.

J. N. Bailenson, A. C. Beall, J. Loomis, J. Blascovich, and M. Turk, Transformed social interaction: Decoupling representation from behavior and form in collaborative virtual environments, PRESENCE: Teleoperators and Virtual Environments, vol.13, issue.4, pp.428-441, 2004.

J. N. Références-bailenson, J. Blascovich, A. C. Beall, and J. M. Loomis, Interpersonal distance in immersive virtual environments, Personality and Social Psychology Bulletin, vol.29, issue.7, pp.819-833, 2003.

J. N. Bailenson, P. Garland, S. Iyengar, and N. Yee, Transformed facial similarity as a political cue: A preliminary investigation, Political Psychology, vol.27, issue.3, pp.373-385, 2006.

J. N. Bailenson, N. Yee, D. Merget, and R. Schroeder, The Effect of Behavioral Realism and Form Realism of Real-Time Avatar Faces on Verbal Disclosure, Nonverbal Disclosure, Emotion Recognition, and Copresence in Dyadic Interaction, Teleoperators and Virtual Environments, vol.15, issue.4, p.359372, 2006.

J. A. Bargh, M. Chen, and L. Burrows, Automaticity of social behavior: Direct effects of trait construct and stereotype activation on action, Journal of personality and social psychology, vol.71, issue.2, pp.230-244, 1996.

R. A. Baron, The foot-in-the-door phenomenon: Mediating effects of size of first request and sex of requester, Bulletin of the Psychonomic Society, vol.2, issue.2, pp.113-114, 1973.

R. F. Baumeister and K. D. Vohs, Encyclopedia of social psychology, vol.2, pp.790-792, 2007.

A. L. Beaman, C. M. Cole, M. Preston, B. Klentz, and N. M. Steblay, Fifteen years of foot-in-the door research a meta-analysis, Personality and Social Psychology Bulletin, vol.9, issue.2, pp.181-196, 1983.

B. Becker and G. Mark, Social Conventions in Computer-Mediated Communication : A comparison of three online shared virtual environments, The Social Life of Avatars, pp.19-39, 2002.

T. Behrend, S. Toaddy, L. F. Thompson, and D. J. Sharek, The effects of avatar appearance on interviewer ratings in virtual employment interviews, Computers in Human Behavior, vol.28, issue.6, p.21282133, 2012.

J. F. Bélisle and H. O. Bodur, Avatars as information : Perception of consumers based on their avatars in virtual worlds, Psychology & Marketing, vol.27, issue.8, pp.741-765, 2010.

D. Bem, Self-Perception Theory, Advances in Experimental Social Psychology, vol.6, pp.60024-60030, 1972.

D. J. Bem and H. K. Mcconnell, Testing the self-perception explanation of dissonance phenomena: on the salience of premanipulation attitudes, Journal of Personality and Social Psychology, vol.14, issue.1, pp.23-31, 1970.

P. L. Benson, S. A. Karabenick, and R. M. Lerner, Pretty pleases: The effects of physical attractiveness, race, and sex on receiving help, Journal of Experimental Social Psychology, vol.12, issue.5, pp.90073-90074, 1976.

G. Bente, S. Rüggenberg, N. C. Krämer, and F. Eschenburg, Avatar Mediated Networking : Increasing Social Presence and Interpersonal Trust in NetBased Collaborations, Human communication research, vol.34, issue.2, pp.287-318, 2008.

C. R. Berger and J. J. Bradac, Language and social knowledge: Uncertainty in interpersonal relations, 1982.

C. R. Berger and R. J. Calabrese, Some explorations in initial interaction and beyond: Toward a developmental theory of interpersonal communication, Human communication research, vol.1, issue.2, pp.99-112, 1975.

K. Bessière, A. F. Seay, and S. Kiesler, The ideal elf: Identity exploration in World of Warcraft, Cyberpsychology & behavior, vol.10, issue.4, pp.530-535, 2007.

F. Biocca, The cyborg's dilemma: Progressive embodiment in virtual environments, Journal of ComputerMediated Communication, vol.3, issue.2, 1997.

,

R. Biocca and F. , Lighting a path while immersed in presence: A wayward introduction, pp.1-9, 2015.

F. Biocca and K. L. Nowak, Plugging your body into the telecommunication system: Mediated Embodiment, Media Interfaces, and Social Virtual Environments, Communication Technology and Society, pp.407-447, 2002.

F. Biocca, C. Harms, and J. K. Burgoon, Toward a more robust theory and measure of social presence: Review and suggested criteria, Presence: Teleoperators and virtual environments, vol.12, issue.5, pp.456-480, 2003.

J. Blascovich, Using physiological indexes of psychological processes in social psychological research, Handbook of research methods in social and personality psychology, pp.117-137, 2000.

J. Blascovich, Social influence within immersive virtual environments, The social life of avatars, pp.127-145, 2002.

J. Blascovich, J. Loomis, A. C. Beall, K. R. Swinth, C. L. Hoyt et al., Immersive virtual environment technology as a methodological tool for social psychology, Psychological Inquiry, vol.13, issue.2, pp.103-124, 2002.

T. Boellstorff, Coming of age in Second Life: An anthropologist explores the virtually human, 2008.

C. Breazeal, Emotion and sociable humanoid robots, International Journal of Human-Computer Studies, vol.59, issue.1-2, pp.119-155, 2003.

J. W. Brehm, A theory of psychological reactance, 1966.

R. Burger and J. M. , The foot-in-the-door compliance procedure: A multipleprocess analysis and review, Personality and Social Psychology Review, vol.3, issue.4, pp.303-325, 1999.

J. Burgoon, Nonverbal Signals, Handbook of Interpersonal Communication, pp.229-285, 1994.

A. H. Buss, Psychological dimensions for the self, 2001.

A. Cann, S. J. Sherman, and R. Elkes, Effects of initial request size and timing of a second request on compliance: The foot in the door and the door in the face, Journal of Personality and Social Psychology, vol.32, issue.5, pp.774-782, 1975.

C. J. Carpenter, A meta-analysis of the effectiveness of the but you are free compliance-gaining technique, Communication Studies, vol.64, issue.1, p.17, 2013.

C. S. Carver and M. F. Scheier, Self-consciousness and reactance, Journal of Research in Personality, vol.15, issue.1, pp.90003-90012, 1981.

E. Castronova, Virtual worlds: A first-hand account of market and society on the cyberian frontier, CESifo Working Paper Series, vol.618, 2001.

E. Castronava, On the research value of large games: Natural experiments in Norrath and Camelot, Games and Culture, vol.1, issue.2, pp.163-186, 2006.

E. Chan and P. Vorderer, Massively Multiplayer Online Games, 2006.

, Playing video games: Motives, responses, and consequences, pp.77-88

J. M. Chertkoff and M. Conley, Opening offer and frequency of concession as bargaining strategies, Journal of Personality and Social Psychology, vol.7, issue.2, pp.181-185, 1967.

R. Cho, C. H. Cheon, and J. , Why do people avoid advertising on the internet?, Journal of advertising, vol.33, issue.4, pp.89-97, 2004.

R. B. Cialdini, Influence : Science and Practice, 2001.

R. B. Cialdini and M. R. Trost, Social influence : Social norms, conformity, and compliance, The handbook of social psychology, vol.2, p.151192, 1998.

R. B. Cialdini, S. L. Brown, B. P. Lewis, C. Luce, and S. L. Neuberg, Reinterpreting the empathyaltruism relationship: When one into one equals oneness, Journal of personality and social psychology, vol.73, issue.3, pp.481-494, 1997.

R. B. Cialdini, M. R. Trost, and J. T. Newsom, Preference for consistency: The development of a valid measure and the discovery of surprising behavioral implications, Journal of Personality and Social Psychology, vol.69, issue.2, p.318328, 1995.

R. B. Cialdini, J. E. Vincent, S. K. Lewis, J. Catalan, D. Wheeler et al., Reciprocal concessions procedure for inducing compliance: The door-in-the-face technique, Journal of personality and Social Psychology, vol.31, issue.2, pp.206-215, 1975.

M. S. Clark, R. Oullette, M. C. Powell, and S. Milberg, Recipient's mood, relationship type, and helping, Journal of personality and social psychology, vol.53, issue.1, pp.94-103, 1987.

G. W. Clatterbuck, Attributional confidence and uncertainty in initial interaction, Human communication research, vol.5, issue.2, pp.147-157, 1979.

C. , Du Web 1, 2012.

A. Cogerino, La construction de l'avatar sur Second Life : un jeu de contraintes entre la réalité et la société virtuelle, Adolescence, vol.69, issue.3, pp.621-629, 2009.

D. Crandall, D. Cosley, D. Huttenlocher, J. Kleinberg, and S. Suri, Feedback effects between similarity and social influence in online communities, Proceedings of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining, pp.160-168, 2008.

E. A. Croes, M. L. Antheunis, A. P. Schouten, and E. J. Krahmer, , 2016.

, Teasing apart the effect of visibility and physical co-presence to examine the effect of CMC on interpersonal attraction, Computers in Human Behavior, vol.55, pp.468-476

R. L. Daft and R. H. Lengel, Information richness: A new approach to managerial behavior and organizational design, 1984.

, Research in organizational behavior, pp.191-233

R. L. Daft and R. H. Lengel, Organizational information requirements, media richness and structural design, Management science, vol.32, issue.5, pp.554-571, 1986.

J. P. Davis, The experience of badbehavior in online social spaces: A survey of online users, Social Computing Group, 2002.

W. Dejong, Consensus information and the foot-in-the-door effect, Personality and Social Psychology Bulletin, vol.7, issue.3, pp.423-430, 1981.

D. Derks, A. E. Bos, and J. Grumbkow, Emoticons and online message interpretation, Social Science Computer Review, vol.26, issue.3, pp.379-388, 2008.

J. P. Dillard and J. L. Hale, Prosocialness and sequential request compliance techniques: Limits to the footinthe door and the doorin theface, Communication Studies, vol.43, pp.220-232, 1992.

J. P. Dillard, J. E. Hunter, and M. Burgoon, Sequentialrequest persuasive strategies, Human Communication Research, vol.10, issue.4, pp.461-488, 1984.

D. Doliski, À Rock or a Hard Place : The Foot-in-the-Face Technique for Inducing Compliance Without Pressure, Journal of Applied Social Psychology, vol.41, issue.6, p.15141537, 2011.

D. Doliski and R. Wiszniowski, Techniques of social influence with reference to political life, Political Preferences, vol.4, pp.133-151, 2013.

N. Ducheneaut, M. H. Wen, N. Yee, and G. Wadley, Body and mind: a study of avatar personalization in three virtual worlds, Proceedings of the SIGCHI conference on human factors in computing systems, pp.1151-1160, 2009.

M. Dufourcq-brana, A. Pascual, and N. Guéguen, Déclaration de liberté et pied-dans-la-porte. Revue internationale de psychologie sociale, vol.19, pp.173-187, 2006.

, Second Life Statistical Charts, Dwell On It, 2016.

A. H. Eagly, Gender and social influence: A social psychological analysis, American Psychologist, vol.38, issue.9, pp.971-981, 1983.

A. H. Eagly and M. Crowley, Gender and helping behavior: A metaanalytic review of the social psychological literature, Psychological bulletin, vol.100, issue.3, pp.283-308, 1986.

A. H. Eagly, R. D. Ashmore, M. G. Makhijani, and L. C. Longo, What is beautiful is good, but : A meta-analytic review of research on the physical attractiveness stereotype, Psychological bulletin, vol.110, issue.1, pp.109-128, 1991.

P. W. Eastwick and W. L. Gardner, Is it a game? Evidence for social influence in the virtual world, Social Influence, vol.4, issue.1, pp.18-32, 2009.

S. M. Edwards, H. Li, and J. Lee, Antecedents and consequences of the perceived intrusiveness Références of pop-up ads, Journal of Advertising, vol.31, issue.3, p.8395, 2002.

M. Eisenbeiss, B. Blechschmidt, K. Backhaus, and P. A. Freund, The (Real) World Is Not Enough: Motivational Drivers and User Behavior in Virtual Worlds, Journal of Interactive Marketing, vol.26, issue.1, p.420, 2012.

T. Emswiller, K. Deaux, and J. E. Willits, Similarity, sex, and requests for small favors, Journal of Applied Social Psychology, vol.1, issue.3, pp.284-291, 1971.

M. Evenchen, Y. Yinon, and A. Bizman, The door in the face technique: Effects of the size of the initial request, European Journal of Social Psychology, vol.8, issue.1, pp.135-140, 1978.

P. J. Ewell, J. A. Minney, and R. E. Guadagno, Social Influence Online, Encyclopedia of Information Science and Technology, pp.6762-6772, 2015.

T. H. Feeley, A. E. Anker, and A. M. Aloe, The door-in-the-face persuasive message strategy: A meta-analysis of the first 35 years, Communication Monographs, vol.79, issue.3, pp.316-343, 2012.

E. Fern, K. Monroe, and R. Avila, Effectiveness of multiple request strategies: A synthesis of research results, Journal of Marketing Research, vol.23, issue.2, p.6480, 1986.

L. Festinger, A theory of cognitive dissonance, 1957.

S. T. Fiske and S. L. Neuberg, A continuum of impression formation, from category-based to individuating processes: Influences of information and motivation on attention and interpretation, Advances in experimental social psychology, vol.23, pp.60317-60319, 1990.

R. Fong, K. Mar, and R. A. , What does my avatar say about me? Inferring personality from avatars, Personality and Social Psychology Bulletin, vol.41, issue.2, pp.237-249, 2014.

J. Fox and J. N. Bailenson, Virtual self-modeling: The effects of vicarious reinforcement and identification on exercise behaviors, Media Psychology, vol.12, issue.1, pp.1-25, 2009.

M. G. Frank and T. Gilovich, The dark side of self-and social perception: black uniforms and aggression in professional sports, Journal of personality and social psychology, vol.54, issue.1, pp.74-85, 1988.

J. L. Freedman and S. C. Fraser, Compliance without pressure: the footin-the-door technique, Journal of personality and social psychology, vol.4, issue.2, pp.195-202, 1966.

S. Gaertner and L. Bickman, Effects of race on the elicitation of helping behavior: The wrong number technique, Journal of Personality and Social Psychology, vol.20, issue.2, pp.218-222, 1971.

G. Gainotti, M. C. Silveri, A. Daniel, and L. Giustolisi, Neuroanatomical correlates of category-specific semantic disorders: A critical survey, 1995.

, Memory, vol.3, issue.3-4, pp.247-263

D. R. Garrison, T. Anderson, and W. Archer, Critical inquiry in a textbased environment: Computer conferencing in higher education. The Internet and Higher Education, vol.2, pp.16-22, 2000.

M. Goldman, Compliance employing a combined Foot-in-the-Door and Door-in-the-Face procedure, The Journal of Social Psychology, vol.126, issue.1, pp.111-116, 1986.

M. Goldman, J. A. Gier, and D. E. Smith, Compliance as affected by task difficulty and order of tasks, The Journal of Social Psychology, vol.114, issue.1, pp.75-83, 1981.

A. L. Gonzales and J. T. Hancock, Identity shift in computer-mediated environments, Media Psychology, vol.11, issue.2, pp.167-185, 2008.

M. D. Goodman and K. C. Gareis, The influence of status on decisions to help, The Journal of Social Psychology, vol.133, issue.1, pp.23-31, 1993.

A. W. Gouldner, The norm of reciprocity: A preliminary statement, American sociological review, vol.25, issue.2, pp.161-178, 1960.

J. M. Govern and L. A. Marsch, Development and validation of the situational self-awareness scale, Consciousness and cognition, vol.10, issue.3, pp.366-378, 2001.

I. Grandjean, S. Meineri, and N. Guéguen, Effets comportementaux et attitudinaux dune procédure de Pied-dans-la-porte en entreprise, 2010.

, , vol.16, pp.30145-30150

A. Grassini, A. Pascual, and N. Guéguen, The effect of the foot-in-thedoor technique on sales in a computer-mediated field setting, 2013.

, Communication Research Reports, vol.30, issue.1, pp.63-67

A. Grassini, A. Pascual, N. Guéguen, and C. Jacob, The effect of the evoking freedomtechnique on sales in a computer-mediated field setting. The International Review of Retail, Distribution and Consumer Research, vol.22, issue.4, pp.435-437, 2012.

, Second Life Grid Survey Economic Metrics, 2016.

R. E. Guadagno, J. Blascovich, J. N. Bailenson, and C. Mccall, Virtual humans and persuasion: The effects of agency and behavioral realism, Media Psychology, vol.10, issue.1, pp.1-22, 2007.

R. E. Guadagno, B. M. Okdie, and N. L. Muscanell, Have We All Just Become Robo-Sapiens?, Reflections on Social Influence Processes in Références the Internet Age, vol.24, p.301309, 2013.

J. Guegan and E. Michinov, Communication via Internet et dynamiques identitaires : une analyse psychosociale, Psychologie Française, vol.56, issue.4, p.223238, 2011.
URL : https://hal.archives-ouvertes.fr/hal-01730552

J. Guegan, P. Moliner, and L. Milland, Social asymmetries and anonymity in dyadic computer-mediated communication, Swiss Journal of Psychology, vol.75, pp.15-23, 2016.
URL : https://hal.archives-ouvertes.fr/hal-02091180

N. Guéguen, Foot-in-the-door technique and computer-mediated communication, Computers in Human Behavior, vol.18, issue.1, pp.33-37, 2002.

N. Guéguen, Fund-raising on the Web: The effect of an electronic Doorin-the-Face technique on compliance to a request, CyberPsychology & Behavior, vol.6, issue.2, pp.189-193, 2003.

N. Guéguen and C. Jacob, Fund-raising on the web: the effect of an electronic foot-in-the-door on donation, CyberPsychology & Behavior, vol.4, issue.6, p.705709, 2001.

N. Guéguen and C. Jacob, Social presence reinforcement and computermediated communication: the effect of the solicitor's photography on compliance to a survey request made by E-mail, CyberPsychology & Behavior, vol.5, issue.2, pp.139-142, 2002.

N. Gueguen and A. Pascual, Evocation of freedom and compliance: The but you are free of...technique. Current research in social psychology, vol.5, pp.264-270, 2000.

N. Guéguen and A. Pascual, La technique du vous êtes libre de : induction dun sentiment de liberté et soumission à une requête ou le paradoxe dune liberté manipulatrice. Revue internationale de psychologie sociale, vol.15, pp.51-80, 2002.

N. Guéguen, C. Jacob, and P. Legohérel, Communication médiatisée par ordinateur et sollicitation à une requête : Une évaluation de l'efficacité de Références la technique du «Pied-dans-la-porte» lors d'une interaction par e-mail ou sur un site Web, vol.16, pp.125-156, 2003.

N. Guéguen, C. Jacob, A. Pascual, and T. Morineau, Request solicitation and semantic evocation of freedom: An evaluation in a computermediated communication context. Perceptual and motor skills, vol.95, pp.208-212, 2002.

N. Guéguen, R. V. Joule, S. Halimifalkowicz, A. Pascual, J. Fischerlokou et al., I'm free but I'll comply with your request: generalization and multidimensional effects of the evoking freedom technique, Journal of Applied Social Psychology, vol.43, issue.1, pp.116-137, 2013.

N. Guéguen, N. Pichot, and G. Dreff, Similarity and helping behavior on the Web: the impact of the convergence of surnames between a solicitor and a subject in a request made by email, Journal of Applied Social Psychology, vol.35, issue.2, pp.423-429, 2005.

C. N. Gunawardena, Social presence theory and implications for interaction and collaborative learning in computer conferences, International journal of educational telecommunications, vol.1, issue.2, pp.147-166, 1995.

C. N. Gunawardena and F. J. Zittle, Social presence as a predictor of satisfaction within a computermediated conferencing environment, American journal of distance education, vol.11, issue.3, pp.8-26, 1997.

J. G. Hamilton, Identifying with an Avatar: A multidisciplinary perspective, Proceedings of Cumulus Conference09, 2009.

M. A. Hamilton and K. L. Nowak, Advancing a Model of Avatar Evaluation and Selection, PsychNology Journal, vol.8, issue.1, pp.33-65, 2010.

L. T. Harris and S. T. Fiske, Dehumanizing the lowest of the low: Neuroimaging responses to extreme out-groups, Psychological science, vol.17, issue.10, pp.847-853, 2006.

R. Heider and F. , The psychology of interpersonal relations, 1958.

P. Hemp, Avatar-based marketing, Harvard business review, vol.84, issue.6, pp.48-57, 2006.

R. Hooi and H. Cho, Deception in avatar-mediated virtual environment, Computers in Human Behavior, vol.29, issue.1, pp.276-284, 2013.

J. H. Huang and Y. F. Chen, Herding in online product choice, Psychology & Marketing, vol.23, issue.5, pp.413-428, 2006.

W. J. Ickes, R. A. Wicklund, and C. B. Ferris, Objective self-awareness and self-esteem, Journal of Experimental Social Psychology, vol.9, issue.3, p.219, 1973.

Z. Ivcevic and N. Ambady, Face to (face) book : the two faces of social behavior?, Journal of personality, vol.81, issue.3, pp.290-301, 2013.

L. Jiang, N. N. Bazarova, and J. T. Hancock, The disclosureintimacy link in computermediated communication: An attributional extension of the hyperpersonal model, Human communication research, vol.37, issue.1, pp.58-77, 2011.

S. A. Jin, It feels right. Therefore, I feel present and enjoy: The effects of regulatory fit and the mediating roles of social presence and self-presence in avatar-based 3D virtual environments, Presence: Teleoperators and Virtual Environments, vol.20, issue.2, pp.105-116, 2011.

S. A. Jin, The virtual malleable self and the virtual identity discrepancy model: Investigative frameworks for virtual possible selves and others in avatar-based identity construction and social interaction, Computers in Human Behavior, vol.28, issue.6, pp.2160-2168, 2012.

A. N. Joinson, Selfdisclosure in computermediated communication: The role of selfawareness and visual anonymity, European journal of social psychology, vol.31, issue.2, pp.177-192, 2001.

E. Jonas, V. Graupmann, D. N. Kayser, M. Zanna, E. Traut-mattausch et al., Culture, self, and the emergence of reactance: Is there a universal freedom, Journal of Experimental Social Psychology, vol.45, issue.5, pp.1068-1080, 2009.
URL : https://hal.archives-ouvertes.fr/hal-00709549

R. V. Joule, Le pied-dans-la-porte : Un paradigme à la recherche d'une théorie, Psychologie française, vol.32, issue.4, pp.301-306, 1987.

R. V. Joule, La psychologie de l'engagement ou lart dobtenir sans imposer, 2003.

R. V. Joule and J. L. Beauvois, La soumission librement consentie : comment amener les gens à faire librement ce qu'ils doivent faire, Presses universitaires de France, 1998.

R. Joule and J. Beauvois, La psychologie de lengagement, Pour La Science, vol.317, issue.1, p.25, 2004.

A. M. Kaplan and M. Haenlein, The fairyland of Second Life: Virtual social worlds and how to use them, Business Horizons, vol.52, issue.6, p.563572, 2009.

K. M. Kapp and T. Driscoll, Learning in 3D : Adding a new dimension to enterprise learning and collaboration, 2010.

F. Keil, The birth and nurturance of concepts by domains: The origins of concepts of living things, pp.234-254, 1994.

C. A. Kiesler, The psychology of commitment: Experiments linking behavior to belief, 1971.

C. A. Kiesler and J. Sakumura, A test of a model for commitment, Journal of personality and social psychology, vol.3, issue.3, pp.349-353, 1966.

R. Kiesler, S. Siegel, J. Mcguire, and T. W. , Social psychological aspects of computer-mediated communication, American psychologist, vol.39, issue.10, pp.1123-1134, 1984.

Y. Kim and S. S. Sundar, Anthropomorphism of computers: Is it mindful or mindless, Computers in Human Behavior, vol.28, pp.241-250, 2012.

R. Kraut, T. Mukhopadhyay, J. Szczypula, S. Kiesler, and B. Scherlis, Information and communication: Alternative uses of the Internet in households, Information Systems Research, vol.10, issue.4, pp.287-303, 1999.

S. Laflamme and S. Lafortune, Utilisation d'Internet et relations sociales. Communication. Information médias théories pratiques, vol.24, pp.97-128, 2006.

F. Lanubile, Collaboration in distributed software development, Software Engineering, pp.174-193, 2009.

. Springer,

E. Lee, Effects of visual representation on social influence in computer-mediated communication: Experimental tests of the social identity model of deindividuation effects, Human Communication Research, vol.30, issue.2, pp.234-259, 2004.

E. Lee, Deindividuation effects on group polarization in computermediated communication: The role of group identification, public-selfawareness, and perceived argument quality, Journal of Communication, vol.57, issue.2, p.385403, 2007.

E. Lee and S. Y. Oh, Computer-mediated communication, 2017.

E. Lee, Effects of the influence agents sex and self-confidence on informational social influence in computer, 2005.

, Communication Research, vol.32, p.2958

J. R. Lee, C. I. Nass, and J. N. Bailenson, Does the mask govern the mind?: effects of arbitrary gender representation on quantitative task Références performance in avatar-represented virtual groups, Cyberpsychology, Behavior and Social Networking, vol.17, issue.4, p.24854, 2014.

K. M. Lee, Presence, explicated. Communication theory, vol.14, pp.27-50, 2004.

K. M. Lee and C. Nass, Social-psychological origins of feelings of presence: Creating social presence with machine-generated voices, Media Psychology, vol.7, issue.1, pp.31-45, 2005.

K. M. Lee, W. Peng, S. A. Jin, and C. Yan, Can robots manifest personality?: An empirical test of personality recognition, social responses, and social presence in humanrobot interaction, Journal of communication, vol.56, issue.4, pp.754-772, 2006.

Y. H. Lee and G. Hsieh, Does slacktivism hurt activism?: the effects of moral balancing and consistency in online activism, Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp.811-820, 2013.

B. J. Li, M. O. Lwin, and Y. Jung, Wii, Myself, and Size: The Influence of Proteus Effect and Stereotype Threat on Overweight Childrens Exercise Motivation and Behavior in Exergames, Games for Health Journal, vol.3, issue.1, p.4048, 2014.

H. Lin and H. Wang, Avatar creation in virtual worlds: Behaviors and motivations, Computers in Human Behavior, vol.34, p.213218, 2014.

M. Lombard and T. Ditton, At the heart of it all: The concept of presence, Journal of ComputerMediated Communication, vol.3, issue.2, 1997.

M. Lombard, F. Biocca, J. Freeman, W. Ijsselsteijn, and R. J. Schaevitz, Immersed in media: Telepresence theory, measurement & technology, 2015.

M. Lourel and N. Gueguen, L'interface vie privéevie au travail. Effets sur l'implication organisationnelle et sur le stress perçu. Les cahiers internationaux de psychologie sociale, vol.74, pp.49-58, 2007.

P. M. Markey, C. N. Markey, and S. M. Wells, Applications of Social and Personality Psychology to Computer Mediated Communications, Trends in Social Psychology, 2003.

. Massively, Second Life November metrics : Nothing Gained, 2008.

K. Matheson and M. P. Zanna, The impact of computer-mediated communication on self-awareness, Computers in Human behavior, vol.4, issue.3, pp.90015-90020, 1988.

K. Matheson and M. P. Zanna, Persuasion as a function of self-awareness in computer-mediated communication, Social Behaviour, vol.4, issue.2, pp.99-111, 1989.

K. Matheson and M. P. Zanna, Computer-mediated communications : The focus is on me, Social Science Computer Review, vol.8, issue.1, pp.1-12, 1990.

J. C. Mccroskey and T. J. Young, Ethos and credibility: The construct and its measurement after three decades, Communication Studies, vol.32, issue.1, pp.24-34, 1981.

R. Mcgloin, K. L. Nowak, and J. Watt, Avatars and Expectations: Influencing Perceptions of Trustworthiness in an Online Consumer Setting, PsychNology Journal, vol.12, issue.1-2, pp.7-28, 2014.

K. Y. Mckenna and . Bargh, Plan 9 From Cyberspace : The Implications of the Internet for Personality and Social Psychology, Personality and Social Psychology Review, vol.4, issue.1, p.5775, 2000.

K. Y. Mckenna and J. A. Bargh, Causes and consequences of social interaction on the Internet: A conceptual framework, Media psychology, vol.1, issue.3, pp.249-269, 1999.

B. E. Mennecke, J. L. Triplett, L. M. Hassall, and . Conde, Embodied social presence theory, System Sciences (HICSS), 2010.

, 43rd Hawaii International Conference on, pp.1-10

B. E. Mennecke, J. L. Triplett, L. M. Hassall, Z. J. Conde, and R. Heer, An examination of a theory of embodied social presence in virtual worlds, Decision Sciences, vol.42, issue.2, pp.413-450, 2011.

P. R. Messinger, E. Stroulia, K. Lyons, M. Bone, R. H. Niu et al., Virtual worlds past, present, and future: New directions in social computing, Decision Support Systems, vol.47, issue.3, p.228, 2009.

S. Milgram, Behavioral study of obedience, The Journal of abnormal and social psychology, vol.67, issue.4, pp.371-378, 1963.

F. Moral-toranzo, J. Canto-ortiz, and L. Gómez-jacinto, Anonymity effects in computer-mediated communication in the case of minority influence, Computers in Human Behavior, vol.23, issue.3, pp.1660-1674, 2007.

N. L. Muscanell and R. E. Guadagno, Make new friends or keep the old: Gender and personality differences in social networking use, Computers in Human Behavior, vol.28, issue.1, pp.107-112, 2012.

A. Nadler, Determinants of help seeking behaviour: The effects of helper's similarity, task centrality and recipient's self-esteem, European Journal of Social Psychology, vol.17, issue.1, pp.57-67, 1987.

C. Nass and Y. Moon, Machines and mindlessness: Social responses to computers, Journal of social issues, vol.56, issue.1, pp.81-103, 2000.

J. W. Références-neuliep and E. L. Grohskopf, Uncertainty reduction and communication satisfaction during initial interaction: An initial test and replication of a new axiom, Communication Reports, vol.13, issue.2, pp.67-77, 2000.

C. Neustaedter and E. Fedorovskaya, Presenting identity in a virtual world through avatar appearances, Proceedings of graphics interface, pp.183-190, 2009.

M. I. Nielsen, Computer-mediated communication and selfawarenessA selective review, Computers in Human Behavior, vol.76, pp.554-560, 2017.

K. L. Nowak, Defining and differentiating copresence, social presence and presence as transportation, Presence 2001 Conference, pp.1-23, 2001.

K. L. Nowak, Choosing Buddy Icons that look like me or represent my personality: Using Buddy Icons for social presence, Computers in Human Behavior, vol.29, issue.4, pp.1456-1464, 2013.

K. L. Nowak and F. Biocca, The effect of the agency and anthropomorphism on users' sense of telepresence, copresence, and social presence in virtual environments, Presence: Teleoperators and Virtual Environments, vol.12, issue.5, pp.481-494, 2003.

K. L. Nowak and C. Rauh, The influence of the avatar on online perceptions of anthropomorphism, androgyny, credibility, homophily, and attraction, Journal of ComputerMediated Communication, vol.11, issue.1, pp.153-178, 2006.

K. L. Nowak and C. Rauh, Choose your buddy icon carefully: The influence of avatar androgyny, anthropomorphism and credibility in online interactions, Computers in Human Behavior, vol.24, issue.4, pp.1473-1493, 2008.

K. L. Nowak, J. Fox, and Y. S. Ranjit, Inferences About Avatars: Sexism, Appropriateness, Anthropomorphism, and the Objectification of Female Virtual Representations, Journal of ComputerMediated Communication, vol.20, issue.5, pp.554-569, 2015.

K. L. Nowak, M. A. Hamilton, and C. C. Hammond, The effect of image features on judgments of homophily, credibility, and intention to use as avatars in future interactions, Media Psychology, vol.12, issue.1, pp.50-76, 2009.

D. J. Okeefe and S. L. Hale, The door-in-the-face influence strategy: A random-effects meta-analytic review, Annals of the International Communication Association, vol.21, issue.1, pp.1-33, 1998.

B. M. Okdie, R. E. Guadagno, F. J. Bernieri, A. L. Geers, and A. R. Mclarneyvesotski, Getting to know you : Face-to-face versus online interactions, Computers in human behavior, vol.27, issue.1, pp.153-159, 2011.

D. J. O'keefe and M. Figge, A guiltbased explanation of the doorin theface influence strategy, Human Communication Research, vol.24, issue.1, pp.64-81, 1997.

D. J. O'keefe and S. L. Hale, An oddsratiobased metaanalysis of research on the doorintheface influence strategy, Communication Reports, vol.14, issue.1, pp.31-38, 2001.

D. J. Okeefe and S. L. Hale, The door-in-the-face influence strategy: A random-effects meta-analytic review, Annals of the International Communication Association, vol.21, issue.1, pp.1-33, 1998.

E. K. Park and S. S. Sundar, Can synchronicity and visual modality enhance social presence in mobile messaging?, Computers in Human Behavior, vol.45, pp.121-128, 2015.

G. Parmentier and S. Rolland, Les consommateurs des mondes virtuels : construction identitaire et expérience de consommation dans Second Life, Recherche et Applications en Marketing, vol.24, issue.3, pp.43-56, 2009.

M. E. Références-patch, The role of source legitimacy in sequential request strategies of compliance, Personality and Social Psychology Bulletin, vol.12, issue.2, pp.199-205, 1986.

M. E. Patch, Differential perception of source legitimacy in sequential request strategies, The Journal of Social Psychology, vol.128, issue.6, pp.817-823, 1988.

J. Peña and J. T. Hancock, An analysis of socioemotional and task communication in online multiplayer video games, Communication research, vol.33, issue.1, pp.92-109, 2006.

J. Peña, J. T. Hancock, and N. A. Merola, The Priming Effects of Avatars in Virtual Settings, Communication Research, vol.36, issue.6, p.838856, 2009.

M. G. Pendleton and C. D. Batson, Self-presentation and the door-in-theface technique for inducing compliance, Personality and Social Psychology Bulletin, vol.5, issue.1, pp.77-81, 1979.

T. Postmes and N. Baym, Intergroup dimensions of the Internet, 2005.

, Intergroup communication:Multiple perspectives, pp.213-238

T. Postmes and R. Spears, Deindividuation and antinormative behavior: A meta-analysis, Psychological bulletin, vol.123, issue.3, pp.238-259, 1998.

T. Postmes and R. Spears, Behavior online: Does anonymous computer communication reduce gender inequality, Personality and Social Psychology Bulletin, vol.28, issue.8, pp.1073-1083, 2002.

T. Postmes, R. Spears, and M. Lea, Intergroup differentiation in computer-mediated communication: Effects of depersonalization, Group Dynamics : Theory, Research, and Practice, vol.6, pp.3-14, 2002.

T. Postmes, R. Spears, K. Sakhel, and D. De-groot, Social influence in computer-mediated communication : The effects of anonymity on group behavior, Personality and Social Psychology Bulletin, vol.27, issue.10, pp.1243-1254, 2001.

M. Prisbell and J. F. Andersen, The importance of perceived homophily, level of uncertainty, feeling good, safety, and selfdisclosure in interpersonal relationships, Communication Quarterly, vol.28, issue.3, pp.22-33, 1980.

G. Prybutok, Youtube : An effective web 2.0 informing channel for health education to prevent STDs. Informing Science: The International Journal of an Emerging Transdiscipline, vol.16, pp.19-36, 2013.

B. Reeves and C. Nass, The Media Equation, 1996.

S. D. Reicher, R. Spears, and T. Postmes, A social identity model of deindividuation phenomena, European review of social psychology, vol.6, issue.1, pp.161-198, 1995.

R. E. Rice and D. Case, Electronic message systems in the university: A description of use and utility, Journal of Communication, vol.33, issue.1, pp.131-152, 1983.

R. E. Rice, J. Ambra, and E. More, Crosscultural comparison of organizational media evaluation and choice, Journal of Communication, vol.48, issue.3, pp.3-26, 1998.

B. Rind and D. Benjamin, Effects of public image concerns and selfimage on compliance, The Journal of Social Psychology, vol.134, issue.1, pp.19-25, 1994.

K. Sassenberg, Common bond and common identity groups on the Internet: Attachment and normative behavior in on-topic and off-topic chats, vol.6, pp.27-37, 2002.

K. Sassenberg, An interactional approach to social influence in computer-mediated communication, 2011.

G. Stasser, Strategic uses of social technology : An interactive perspective of social psychology, pp.63-83

K. Sassenberg and K. J. Jonas, Attitude change and social influence on the net, Joinson et al., Oxford handbook of internet psychology, pp.270-286, 2007.

K. Sassenberg, M. Boos, and S. Rabung, Attitude change in facetoface and computermediated communication : private selfawareness as mediator and moderator, European Journal of Social Psychology, vol.35, issue.3, pp.361-374, 2005.

P. Schmoll, Jeux sans fin et société ludique. Les jeux vidéo au croisement du social, de lart et de la culture, Questions de communication, vol.8, pp.27-42, 2010.

A. P. Schouten, P. M. Valkenburg, and J. Peter, An experimental test of processes underlying self-disclosure in computer-mediated communication, Cyberpsychology : Journal of Psychosocial Research on Cyberspace, vol.3, issue.2, 2009.

U. Schultze, Embodiment and presence in virtual worlds: a review, Journal of Information Technology, vol.25, issue.4, pp.434-449, 2010.
DOI : 10.1057/jit.2010.25

K. Y. Segovia and J. N. Bailenson, Virtual imposters: Responses to avatars that do not look like their controllers, Social Influence, vol.7, issue.4, pp.285-303, 2012.
DOI : 10.1080/15534510.2012.670906

C. Seligman, M. Bush, and K. Kirsch, Relationship between compliance in the foot-in-the-door paradigm and size of first request, Journal of Personality and Social Psychology, vol.33, issue.5, pp.517-520, 1976.

M. Shanab and P. Oneil, The effects of self-perception and perceptual contrast upon compliance with socially undesirable requests, Bulletin of the Psychonomic Society, vol.19, issue.5, p.279281, 1982.
DOI : 10.3758/bf03330257
URL : https://link.springer.com/content/pdf/10.3758%2FBF03330257.pdf

J. Sheehan, Introduction : Humans and Machines, The Boundaries of Humanity: Humans, Animals, Machines, pp.135-141, 1991.

J. Short, E. Williams, and B. Christie, The social psychology of telecommunications, 1976.

M. Slater and A. Steed, Meeting people virtually : Experiments in shared virtual environments, The Social Life of Avatars, pp.146-171, 2002.
DOI : 10.1007/978-1-4471-0277-9_9

M. Slater, A. Antley, A. Davison, D. Swapp, C. Guger et al., A virtual reprise of the Stanley Milgram obedience experiments, PloS one, issue.1, p.1, 2006.

R. Spears and M. Lea, Panacea or panopticon? The hidden power in computer-mediated communication, Communication Research, vol.21, issue.4, pp.427-459, 1994.

. Statista, Un quart de la population mondiale est sur Facebook, 2017.

B. M. Staw, Knee-deep in the big muddy: A study of escalating commitment to a chosen course of action. Organizational behavior and human performance, vol.16, pp.90005-90007, 1976.

A. Stibe, H. Oinas-kukkonen, I. Pahnila, and S. , , 2011.

, Incremental persuasion through microblogging: a survey of Twitter users in Latvia, Proceedings of the 6th International Conference on Persuasive Technology: Persuasive Technology and Design: Enhancing Sustainability and Health, p.8

A. Strenta and W. Dejong, The effect of a prosocial label on helping behavior, Social Psychology Quarterly, vol.44, issue.2, pp.142-147, 1981.

J. Suler, The psychology of avatars and graphical space in multimedia chat communities, Sprache, Interaktion, Sozialität & Identität in synchroner computervermittelter, 1999.

, Références Kommunikation. Perspektiven auf ein interdisziplinäres Forschungsfeld, pp.305-344

J. Suler, The online disinhibition effect, Cyberpsychology & Behavior, vol.7, issue.3, p.321327, 2004.

H. Tajfel, Social categorization, social identity and social comparison, Differentiation between social groups: Studies in the social psychology of intergroup relations, p.6176, 1978.

M. Tanis and T. Postmes, Social cues and impression formation in CMC, Journal of Communication, vol.53, issue.4, pp.676-693, 2003.

T. L. Taylor, Living Digitally: Embodiment in virtual worlds, 2002.

. Schroeder, The Social Life of Avatars : Presence and interaction in shared virtual environments

L. C. Tidwell and J. B. Walther, Computermediated communication effects on disclosure, impressions, and interpersonal evaluations: Getting to know one another a bit at a time, Human communication research, vol.28, issue.3, pp.317-348, 2002.

S. T. Tong and J. B. Walther, The Confirmation and Disconfirmation of Expectancies in Computer-Mediated Communication, Communication Research, vol.42, issue.2, p.186212, 2015.

C. H. Tu, The Measurement of Social Presence in an Online Learning, International Journal on E-Learning, vol.1, issue.2, p.3445, 2002.

C. H. Tu, Critical examination of factors affecting interaction on CMC, Journal of Network and Computer Applications, vol.23, issue.1, pp.39-58, 2000.

S. Turkay and C. K. Kinzer, The effects of avatar-based customization on player identification, International Journal of Gaming and ComputerRéférences Mediated Simulations (IJGCMS), vol.6, issue.1, pp.1-25, 2014.

J. C. Turner, Social categorization and the self-concept: A social cognitive theory of group behavior, Advances in group processes, vol.2, pp.77-122, 1985.

K. J. Tusing and J. P. Dillard, The Psychological Reality of the Door-inthe-Face Its Helping, not Bargaining, Journal of Language and Social Psychology, vol.19, issue.1, pp.5-25, 2000.

S. W. Uranowitz, Helping and self-attributions: A field experiment, Journal of Personality and Social Psychology, vol.31, issue.5, pp.852-854, 1975.

J. Vaes, M. P. Paladino, and J. P. Leyens, The lost email: Prosocial reactions induced by uniquely human emotions, British journal of social psychology, vol.41, issue.4, pp.521-534, 2002.

R. R. Vallacher and D. M. Wegner, A theory of action identification, 1985.

A. Vasalou and A. N. Joinson, Me, myself and I: The role of interactional context on self-presentation through avatars, Computers in Human Behavior, vol.25, issue.2, pp.510-520, 2009.

A. M. Von-der-pütten, N. C. Krämer, J. Gratch, and S. Kang, It doesnt matter what you are! Explaining social effects of agents and avatars, Computers in Human Behavior, vol.26, issue.6, p.16411650, 2010.

T. F. Waddell and J. D. Ivory, It's not easy trying to be one of the guys: the effect of avatar attractiveness, avatar sex, and user sex on the success of help-seeking requests in an online game, Journal of Broadcasting & Electronic Media, vol.59, issue.1, pp.112-129, 2015.

J. B. Walther, Interpersonal effects in computer-mediated interaction a relational perspective, Communication research, vol.19, issue.1, pp.52-90, 1992.

R. Walther and J. B. , Computer-mediated communication impersonal, interpersonal, and hyperpersonal interaction, Communication research, vol.23, issue.1, pp.3-43, 1996.

J. B. Walther, Nonverbal dynamics in computer-mediated communication, or :(and the net :(s with you, :) and you :) alone, 2006.

, The SAGE Handbook of nonverbal communication, pp.461-479

J. B. Walther, Theories of Computer-Mediated Communication and Interpersonal Relations, pp.443-479, 2011.

J. B. Walther and M. R. Parks, Cues filtered out, cues filtered in: Computer-mediated communication and relationships, Handbook of Interpersonal Communication, p.529563, 2002.

J. B. Walther, J. E. Anderson, and D. W. Park, Interpersonal antisocial communication, Communication Research, vol.21, pp.460-487, 1994.

J. B. Walther, C. L. Slovacek, and L. C. Tidwell, Is a picture worth a thousand words? Photographic images in long-term and short-term computer-mediated communication, Communication Research, vol.28, issue.1, pp.105-134, 2001.

Z. Wang, J. B. Walther, S. Pingree, and R. P. Hawkins, Health information, credibility, homophily, and influence via the Internet : Web sites versus discussion groups, Health communication, vol.23, issue.4, pp.358-368, 2008.

, Digital in 2018 : Worlds internet users pass the 4 billion mark, We Are Social, 2018.

D. M. Wegner and W. D. Crano, Racial factors in helping behavior: An unobtrusive field experiment, Journal of Personality and Social Psychology, vol.32, issue.5, pp.901-905, 1975.

R. Williams and D. , The mapping principle, and a research framework for virtual worlds, Communication Theory, vol.20, issue.4, pp.451-470, 2010.

K. D. Williams and E. D. Wesselmann, The link between ostracism and aggression, The psychology of social conflict and aggression, pp.37-51, 2011.

K. Williams and K. Williams, Impact of source strength on two compliance techniques, Basic and Applied Social Psychology, vol.70, issue.2, p.149159, 1989.

M. Z. Yao and A. J. Flanagin, A self-awareness approach to computermediated communication, Computers in Human Behavior, vol.22, issue.3, pp.518-544, 2006.

N. Yee, Motivations for play in online games, CyberPsychology & behavior, vol.9, issue.6, pp.772-775, 2006.

N. Yee, The Proteus paradox: How online games and virtual worlds change us-and how they don't, 2014.

N. Yee and J. Bailenson, The Proteus Effect: The Effect of Transformed Self-Representation on Behavior, Human Communication Research, vol.33, issue.3, p.271290, 2007.

N. Yee and J. N. Bailenson, The Difference Between Being and Seeing: The Relative Contribution of Self-Perception and Priming to Behavioral Changes via Digital Self-Representation, Media Psychology, vol.12, issue.2, p.209, 2009.

N. Yee, J. N. Bailenson, M. Urbanek, F. Chang, and D. Merget, The unbearable likeness of being digital: the persistence of nonverbal social norms in online virtual environments, Cyberpsychology & Behavior, vol.10, issue.1, p.11521, 2007.