虛擬社群發展已久，相對於過去純粹使用論壇來彼此交換訊息或知識的方法，配合手機或行動裝置的發明，要與他人交換訊息或知識可使用多種方式進行，可透過YouTube上傳影片傳遞知識，並在留言區與他人互動；也可透過Facebook建立相關主題的社群，吸引他人加入並促進交流。在今日股票上萬點後，重回金融風暴前的股市狂熱，但許多人常常遭受股市虛擬社群群組邀請的騷擾。對於虛擬社群的研究非常多，但結合投資領域後，相關研究篇幅則大幅下降，然而在今日與投資相關的虛擬社群卻不在少數。
虛擬社群過去研究，大多著重於虛擬社群的知識分享行為、對品牌忠誠度的影響、從眾行為等，本研究將探討虛擬社群的正負向影響，並分析以兩特點對投資意圖所帶來的影響為何，再往前探討動機對虛擬社群之影響，內外部個體動機與虛擬社群之間是否存在著某種關聯性。
本研究藉著這股投資風潮，探討是什麼原因讓人們會想進行投資行為，並加入投資虛擬社群，且此投資虛擬社群是否真的對他們的投資意圖造成影響，另外，虛擬社群能否扮演中介角色，對動機與意圖產生中介效果。本研究根據過去文獻建立衡量量表，並採網路問卷形式發放，共發放357份問卷，刪除掉17份無效問卷之後，針對340份有使用投資虛擬社群並同時進行投資者進行分析。
經過分析後，研究結果顯示: (一)自主感對虛擬社群有用性有正向影響，對資訊過載有負向影響；(二)勝任感對虛擬社群有用性有正向影響，對資訊過載有負向影響；(三)主觀規範對虛擬社群有用性有正向影響；(四)虛擬社群有用性對投資意圖有正向影響；(五)內部動機會透過虛擬社群-有用性的中介效果對投資意圖產生顯著影響。

Virtual communities have been developing for a long time. Compared with the past method of simply using forums to exchange information or knowledge with each other, with the invention of mobile phones or mobile devices, there are many ways to exchange information or knowledge with others. You can upload videos through YouTube to transfer knowledge, and interact with others in the comment; you can also create a community of related topics through Facebook to attract others to join and promote communication. This research uses this investment trend to explore what makes people want to join the investment virtual community, and whether this virtual investment community really affects their investment intentions. In addition, the virtual community can play a mediating role and have a mediating effect on motivation and intention. This study established a measurement scale based on past literature, and distributed it in the form of online questionnaires. A total of 357 questionnaires were distributed. After 17 invalid questionnaires were deleted,340 investors who used the investment virtual community were analyzed at the same time. After analysis, the results of the study showed that: (1) The sense of autonomy has a positive impact on the usefulness of virtual communities and a negative impact on information overload. (2) Competence has a positive impact on the usefulness of virtual communities and a negative impact on information overload. (3) Subjective norms have a positive impact on the usefulness of virtual communities. (4) The usefulness of virtual communities has a positive impact on investment intentions. (5)Intrinsic motivation has a significant impact on investment intention through the mediating effect of virtual community-usefulness.

Agnew, J. R., & Szykman, L. R. (2005). Asset allocation and information overload: The influence of information display, asset choice, and investor experience. The Journal of Behavioral Finance, 6(2), 57-70.
Ali, A. (2011). Predicting individual investors’ intention to invest: an experimental analysis of attitude as a mediator. International Journal of Human and Social Sciences, 6(1), 876-883.
Alleyne, P. (2011). Using the theory of planned behaviour and risk propensity to measure investment intentions among future investors. Journal of Eastern Caribbean Studies, 36(1), 1-21.
Anand, V., Ashforth, B. E., & Joshi, M. (2004). Business as usual: The acceptance and perpetuation of corruption in organizations. Academy of Management Perspectives, 18(2), 39-53.
Ashforth, B. E., & Mael, F. (1989). Social identity theory and the organization. Academy of management review, 14(1), 20-39.
Assegaff, S., Kurniabudi, E. F., & Fernando, E. (2016). Impact of extrinsic and intrinsic motivation on knowledge sharing in virtual communities of practices. Indonesian Journal of Electrical Engineering and Computer Science, 1(3), 619-626.
Azjen, I. (1980). Understanding attitudes and predicting social behavior. Englewood Cliffs.
Barkoukis, V., Tsorbatzoudis, H., Grouios, G., & Sideridis, G. (2008). The assessment of intrinsic and extrinsic motivation and amotivation: Validity and reliability of the Greek version of the Academic Motivation Scale. Assessment in Education: Principles, Policy & Practice, 15(1), 39-55.
Baron, R. M., & Kenny, D. A. (1986). The moderator–mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations. Journal of personality and social psychology, 51(6), 1173.
Baumeister, R. F., & Leary, M. R. (1995). The need to belong: Desire for interpersonal attachments as a fundamental human motivation. Interpersonal development, 57-89.
Beattie, J., Baron, J., Hershey, J. C., & Spranca, M. D. (1994). Psychological determinants of decision attitude. Journal of Behavioral Decision Making, 7(2), 129-144.
Benselin, J. C., & Ragsdell, G. (2016). Information overload: The differences that age makes. Journal of Librarianship and Information Science, 48(3), 284-297.
Bock, G. W., & Kim, Y.-G. (2002). Breaking the myths of rewards: An exploratory study of attitudes about knowledge sharing. Information Resources Management Journal (IRMJ), 15(2), 14-21.
Chandran, D., & Alammari, A. M. (2021). Influence of culture on knowledge sharing attitude among academic staff in eLearning virtual communities in saudi Arabia. Information Systems Frontiers, 23(6), 1563-1572.
Chen, W., Wei, X., & Zhu, K. (2017). Engaging voluntary contributions in online communities: A hidden Markov model. MIS quarterly, 42(1), 83-100.
Cheng, P., Ouyang, Z., & Liu, Y. (2020). The effect of information overload on the intention of consumers to adopt electric vehicles. Transportation, 47(5), 2067-2086.
Chiu, C.-M., Hsu, M.-H., & Wang, E. T. (2006). Understanding knowledge sharing in virtual communities: An integration of social capital and social cognitive theories. Decision support systems, 42(3), 1872-1888.
Cole, D. N., Hammond, T. P., & McCool, S. F. (1997). Information quantity and communication effectiveness: Low‐impact messages on wilderness trailside bulletin boards. Leisure Sciences, 19(1), 59-72.
Deci, E. L. (1975). The Intrinsic Motivation of Behavior. In Intrinsic Motivation (pp. 93-125). Springer.
Deci, E. L., & Ryan, R. M. (1985). Intrinsic motivation and self-determination in human behavior. Springer Science & Business Media.
Deci, E. L., & Ryan, R. M. (1995). Human autonomy. In Efficacy, agency, and self-esteem (pp. 31-49). Springer.
Deci, E. L., & Ryan, R. M. (2008). Facilitating optimal motivation and psychological well-being across life's domains. Canadian psychology/Psychologie canadienne, 49(1), 14.
Deci, E. L., Ryan, R. M., Gagné, M., Leone, D. R., Usunov, J., & Kornazheva, B. P. (2001). Need satisfaction, motivation, and well-being in the work organizations of a former eastern bloc country: A cross-cultural study of self-determination. Personality and social psychology bulletin, 27(8), 930-942.
DeVellis, R. F., & Thorpe, C. T. (2021). Scale development: Theory and applications. Sage publications.
Evans, J. R., & Mathur, A. (2005). The value of online surveys. Internet research.
Ferguson, R., Gutberg, J., Schattke, K., Paulin, M., & Jost, N. (2015). Self‐determination theory, social media and charitable causes: An in‐depth analysis of autonomous motivation. European journal of social psychology, 45(3), 298-307.
Gao, W., Liu, Y., Liu, Z., & Li, J. (2018). How does presence influence purchase intention in online shopping markets? An explanation based on self-determination theory. Behaviour & Information Technology, 37(8), 786-799.
Gollwitzer, P. M., & Bargh, J. A. (1996). The psychology of action: Linking cognition and motivation to behavior. Guilford Press.
Gopi, M., & Ramayah, T. (2007). Applicability of theory of planned behavior in predicting intention to trade online: Some evidence from a developing country. International Journal of Emerging Markets.
Hutapea, H. A., Hidayanto, A. N., Azzahro, F., & Nugroho, W. S. (2019). The influence of medium credibility towards information adoption in Indonesia stock investment virtual communities. 12th International Conference on ICT, Society and Human Beings, ICT 2019, 5th International Conference on Connected Smart Cities, CSC 2019 and the 16th International Conference on Web Based Communities and Social Media, WBC 2019,
Ilieva, J., Baron, S., & Healey, N. M. (2002). Online surveys in marketing research. International Journal of Market Research, 44(3), 1-14.
Isakovic, J., & Sulcic, A. (2008). A value-added methodology for defining virtual communities for enterprises. Proceedings of the 12th international conference on Entertainment and media in the ubiquitous era,
Iyengar, S. S., & Lepper, M. R. (2000). When choice is demotivating: Can one desire too much of a good thing? Journal of personality and social psychology, 79(6), 995.
Kelman, H. C. (1958). Compliance, identification, and internalization three processes of attitude change. Journal of conflict resolution, 2(1), 51-60.
Kelman, H. C., & Hamilton, V. L. (1989). Crimes of obedience: Toward a social psychology of authority and responsibility. Yale University Press.
Kerlinger, F. N. (1966). Foundations of behavioral research.
Koh, J., & Kim, Y.-G. (2004). Knowledge sharing in virtual communities: an e-business perspective. Expert systems with applications, 26(2), 155-166.
Koon, O., Chan, R. Y., & Sharma, P. (2020). Moderating effects of socio-cultural values on pro-environmental behaviors. Marketing Intelligence & Planning.
Lai, C.-P. (2019). Personality traits and stock investment of individuals. Sustainability, 11(19), 5474.
Lee, F. S., Vogel, D., & Limayem, M. (2003). Virtual community informatics: A review and research agenda. Journal of Information Technology Theory and Application (JITTA), 5(1), 5.
Lefever, S., Dal, M., & Matthíasdóttir, Á. (2007). Online data collection in academic research: advantages and limitations. British Journal of Educational Technology, 38(4), 574-582.
Lin, H.-F. (2006). Understanding behavioral intention to participate in virtual communities. CyberPsychology & Behavior, 9(5), 540-547.
Lin, X., Featherman, M., & Sarker, S. (2017). Understanding factors affecting users’ social networking site continuance: A gender difference perspective. Information & Management, 54(3), 383-395.
Lubis, P. K. D. (2019). Influence of Knowledge Investment and Investment Motivation Against the Interest of Investing in the Stock Market on Economic Education Status of Students of State University of Medan. Journal of Physics: Conference Series,
Malhotra, Y., & Galletta, D. (2005). A multidimensional commitment model of volitional systems adoption and usage behavior. Journal of Management Information Systems, 22(1), 117-151.
Mattke, J., Maier, C., Reis, L., & Weitzel, T. (2021). Bitcoin investment: a mixed methods study of investment motivations. European Journal of Information Systems, 30(3), 261-285.
Niu, G., Yao, L., Tian, Y., Sun, X., & Zhou, Z. (2020). Information overload and the intention to reduce SNS usage: the mediating roles of negative social comparison and fatigue. Current Psychology, 1-8.
O'Reilly III, C. A. (1980). Individuals and information overload in organizations: is more necessarily better? Academy of management journal, 23(4), 684-696.
Pan, Y., Xu, Y. C., Wang, X., Zhang, C., Ling, H., & Lin, J. (2015). Integrating social networking support for dyadic knowledge exchange: A study in a virtual community of practice. Information & Management, 52(1), 61-70.
Phan, K. C., & Zhou, J. (2014). Factors influencing individual investor behavior: An empirical study of the Vietnamese stock market. American Journal of Business and Management, 3(2), 77-94.
Ryan, R. M. (1982). Control and information in the intrapersonal sphere: An extension of cognitive evaluation theory. Journal of personality and social psychology, 43(3), 450.
Ryan, R. M., & Connell, J. P. (1989). Perceived locus of causality and internalization: examining reasons for acting in two domains. Journal of personality and social psychology, 57(5), 749.
Ryan, R. M., & Deci, E. L. (2000a). Intrinsic and extrinsic motivations: Classic definitions and new directions. Contemporary educational psychology, 25(1), 54-67.
Ryan, R. M., & Deci, E. L. (2000b). Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being. American psychologist, 55(1), 68.
Ryan, R. M., Kuhl, J., & Deci, E. L. (1997). Nature and autonomy: An organizational view of social and neurobiological aspects of self-regulation in behavior and development. Development and psychopathology, 9(4), 701-728.
Sørebø, Ø., Halvari, H., Gulli, V. F., & Kristiansen, R. (2009). The role of self-determination theory in explaining teachers’ motivation to continue to use e-learning technology. Computers & Education, 53(4), 1177-1187.
Schmidt, N. (2010). What drives investments into mutual funds? Applying the theory of planned behaviour to individuals’ willingness and intention to purchase mutual funds. Conference Proceeding. Retrieved from http://retailinvestmentconference. org,
Shang, R. A., Chen, Y. C., & Chen, C. J. (2013). The social and objective value of information in virtual investment communities. Online Information Review.
Shang, R. A., Chen, Y. C., & Liao, H. J. (2006). The value of participation in virtual consumer communities on brand loyalty. Internet research.
Shen, X. L., Zhang, K. Z., & Zhao, S. J. (2016). Herd behavior in consumers’ adoption of online reviews. Journal of the Association for Information Science and Technology, 67(11), 2754-2765.
Shukla, P., & Drennan, J. (2018). Interactive effects of individual-and group-level variables on virtual purchase behavior in online communities. Information & Management, 55(5), 598-607.
Skinner, E. A. (1995). Perceived control, motivation, & coping (Vol. 8). Sage.
Smith, N. C., Simpson, S. S., & Huang, C.-Y. (2007). Why managers fail to do the right thing: An empirical study of unethical and illegal conduct. Business Ethics Quarterly, 17(4), 633-667.
Taylor, S., & Todd, P. (1995). An integrated model of waste management behavior: A test of household recycling and composting intentions. Environment and behavior, 27(5), 603-630.
Tsai, H.-T., & Bagozzi, R. P. (2014). Contribution behavior in virtual communities: Cognitive, emotional, and social influences. MIS quarterly, 38(1), 143-164.
Tsai, M.-T., Chen, K.-S., & Chien, J.-L. (2012). The factors impact of knowledge sharing intentions: the theory of reasoned action perspective. Quality & Quantity, 46(5), 1479-1491.
Vallerand, R. J. (1997). Toward a hierarchical model of intrinsic and extrinsic motivation. In Advances in experimental social psychology (Vol. 29, pp. 271-360). Elsevier.
Vallerand, R. J., Pelletier, L. G., Blais, M. R., Briere, N. M., Senecal, C., & Vallieres, E. F. (1992). The Academic Motivation Scale: A measure of intrinsic, extrinsic, and amotivation in education. Educational and psychological measurement, 52(4), 1003-1017.
Venkatesh, V., & Davis, F. D. (2000). A theoretical extension of the technology acceptance model: Four longitudinal field studies. Management science, 46(2), 186-204.
Venkatesh, V., Morris, M. G., Davis, G. B., & Davis, F. D. (2003). User acceptance of information technology: Toward a unified view. MIS quarterly, 425-478.
Wang, Y., Meister, D. B., & Gray, P. H. (2013). Social influence and knowledge management systems use: Evidence from panel data. MIS quarterly, 299-313.
Wasko, M. M., & Faraj, S. (2005). Why should I share? Examining social capital and knowledge contribution in electronic networks of practice. MIS quarterly, 35-57.
Yang, M., Mamun, A. A., Mohiuddin, M., Al-Shami, S. S. A., & Zainol, N. R. (2021). Predicting Stock Market Investment Intention and Behavior among Malaysian Working Adults Using Partial Least Squares Structural Equation Modeling. Mathematics, 9(8), 873.
Yun, G. W., & Trumbo, C. W. (2000). Comparative response to a survey executed by post, e-mail, & web form. Journal of computer-mediated communication, 6(1), JCMC613.
Zhang, M., Guo, L., Hu, M., & Liu, W. (2017). Influence of customer engagement with company social networks on stickiness: Mediating effect of customer value creation. International Journal of Information Management, 37(3), 229-240.
Zhang, S., Zhao, L., Lu, Y., & Yang, J. (2016). Do you get tired of socializing? An empirical explanation of discontinuous usage behaviour in social network services. Information & Management, 53(7), 904-914.
Zhang, X., Ding, X., & Ma, L. (2022). The influences of information overload and social overload on intention to switch in social media. Behaviour & Information Technology, 41(2), 228-241.
Zhou, H., & Duanmu, M. (2008). Improving customer loyalty by knowledge-sharing-based virtual communities. 2008 IEEE International Conference on Service Operations and Logistics