1. Introduction
Sustainable development has emerged as the latest catchphrase over the last decades and has become an essential part of the strategic planning processes of firms. Regarding the financial sector, capital markets should facilitate the raising of capital at low costs for firms to finance their efforts to become sustainable [
1]. Waygood [
2] indicated that this role has been weakened due to the inefficiencies of capital markets. The inability of the predictive power of investors is the main reason for market inefficiency, which results in the failure of the market to recognize and reward the right conduct of firms to become sustainable. Shantha [
1] suggested that the information on the sustainable development efforts of companies is not completely and rapidly included into these company stock prices if the participants in the stock market have biases in their behaviors. Compared with institutional investors, individual investors are less sophisticated because of limited attention, memory, time, profession, and processing infrastructure. Therefore, individual investors tend to use simple heuristics or rules of thumb in making decisions, which become maladaptive in the real dynamic stock markets [
3,
4].
The general assumption is that it is worth increasing investors’ participation in direct trading activities in stock markets since the performance of the stock market is strong compared with other investment choices historically [
5]. The Taiwan Stock Exchange (TWSE) began operations with only 18 security agency companies listed in 1962. According to the annual statistics report of the World Federal Exchange, the total value of the market capitalization of TWSE reached US
$ 596 billion, ranking 20th globally in 2006 [
6]. Traders in the TWSE are typically categorized into individual and institutional investors. The stock market in Taiwan is unique because individual investors accounted for approximately 90% of all stock trading volumes from 1995 to 1999 [
7], and the ratio of individual investors was high, reaching 72.8% in 2006. However, given the impact of the 2008 financial crisis and subsequent financial fraud, the ratio of individual investors decreased to 48% in 2015 [
8].
Figure 1 presents the fraction of market capitalization held by institutional and individual investors over the period of 2005–2017 [
8].
Gordon [
9] proposed the “Myron Gordon’s Dividend Growth Model” that explains how the dividend policy of a firm is the basis for establishing share value, assuming that future dividends will grow at a constant rate in perpetuity. The Gordon [
9] growth model is widely applied in financial academics and relies on the assumption that firms have sustainable development to distribute dividends constantly. Besides, the sustainability of corporate finance means the maximization of shareholders’ wealth with high growth rate based on a stable financial condition while not depleting its financial resources. Stability is primarily reflected in the rapid and stable cash flow. However, lack of capital inflow would have great impacts on firms’ capability in investment and efficiency when allocating their resources [
10]. However, financial fraud, such as that committed by Enron and WorldCom, has become prevalent. In 2001, the Enron case impelled the US Congress to pass the “Sarbanes–Oxley Act” to set new or expanded requirements for all public company boards, management, and public accounting firms. Following the 2001 Enron scandal, a series of corporate frauds also occurred, and numerous firms declared bankruptcy in Taiwan. Procomp Informatics Ltd., one of the largest listed firms in Taiwan, astonished investors in 2004 by defaulting on corporate bonds worth NT
$2.98 billion (US
$95,666 million). Nearly 30,000 investors, among whom more than 20,000 shareholders hold stock in the company, were affected in this scandal. Numerous families were hit significantly by the losses [
11]. In 2006, the Rebar Asia Pacific Group was engaged in a high-profile embezzlement case. The Rebar Group is one of the top family businesses in Taiwan and was involved in various industries, including construction, real estate, hotel, vehicle, non-life insurance, retail services, banking, media, and textiles. Corporate fraud by the Rebar Group exposed the agency problems present in family-owned businesses. Some internal managers or shareholders take advantage of their business operations for self-interest [
12]. The detection of financial fraud, which causes decreases in dividend and capital gains for investors, became difficult, particularly for individual investors. Thus, the sustainable development of firms in Taiwan was seriously affected by the loss of participation of individual investors in the stock market.
Traditional finance theories propose that people behave rationally and their behaviors can be predicted. However, recent empirical research has indicated that it is difficult to justify investors’ behaviors via conventional rational theories, including the capital asset pricing model (CAPM), which shows how investors chose their portfolios on the efficiency frontier, given their preferences and tradeoffs between expected returns and risk [
13,
14,
15], and the efficient market hypothesis (EMH), which states that the capital market is efficient if security prices accurately reflected all relevant information in determining those prices [
16], because market participants in the real world often behaved unpredictably. The perceptive factors that may influence the behaviors via psychological and personal characteristics have been neglected. Behavioral finance helps explain these phenomena by considering the perspectives of psychology [
17].
Andersson, Hedesström, and Gärling [
18] identified a social-psychological aspect that conceived herding as an informative social influence from heuristic or systematic information processes. Stock investors made the predictions of future stock prices based on various sources of information [
19]. Hoffmann, Post, and Pennings [
20] found that investors’ cognitions were important in deciding their actual behaviors in trading and risk-taking activities. Yeh and Li [
21] indicated eight psychological states of investors that affected the stock market from the interaction among investor sentiments, whether herding or non-herding, such as suspicion, hope, optimism, euphoria, overconfidence, ambivalence, pessimism, and fear. Every psychological state had a significant influence on the market returns. The other main issue in behavioral finance is disposition effect, defined as the phenomenon that investors tend to keep losing positions too long and to sell winning positions too early [
22]. Research in different trading contexts and cultures has reported the effects of disposition [
23,
24]. Kadous et al. [
25] reported that investors with higher self-regard held losing investments shorter than those with lower self-regard.
Previous studies in the behavioral finance literature have centered on herd bias and disposition effects. Nonetheless, little literature is found regarding the effects of personality traits on the stock investment intentions of individuals. In addition, to realize the behaviors of stock investors, this study is also concerned with the individuals who have not been involved in direct trading in stock markets but could be potential investors that are motivated to participate in stock investment. For governments and institutions that regulate and facilitate stock market participation, a corresponding need exists to recognize the perceptions of individuals toward stock investment that can be encouraged and enhanced with the policy goal to promote wide stock ownership. An understanding of the intentions of individual stock investors would also have great practical value, especially for managers of security firms seeking to manage stock trading effectively and recognized individual stock investors’ needs for the improvement of the services of their firms. With these motivations, this study is the first attempt to examine how the big five personality characteristics influence individual investors in their cognitions and intentions in investing in the stock markets.
This study has several contributions to the academia and industry. First, according to the behavioral finance literature, a comprehensive examination of the stock investment intentions of individuals has not been conducted. This study provides empirical evidence on how personality traits influence individual perceptions, which in turn affect their intentions to participate in the stock markets. Second, this study is the first to apply the theory of planned behavior (TPB) model [
26] and extend this model with the big five personality characters in the investigation of the perceptions and intentions of individual stock investors in the financial sector. The results demonstrate that subjective norm, attitude, and perceived behavior control are identified to have significant effects on the stock investment intentions of individuals. Personality traits, such as agreeableness and openness to experience, are shown to significantly affect subjective norm. Extroversion, conscientiousness, and openness to experience are revealed to significantly influence perceived behavioral control. Third, this study discovers the moderating roles of gender, age, and stock trading experience in the research. Gender is indicated to have only a significant effect on the relationship between conscientiousness and attitude. Age is shown to have a significant influence on the relationship between extroversion and perceived behavioral control. Prior stock trading experiences are shown to significantly moderate the relationships of attitudes to stock investment intention, as well as extroversion to subjective norm, attitude, and perceived behavioral control. Fourth, to distinguish from previous research on personality traits and investment choices that is conducted on the basis of experimental or clinical designs with limited samples from students [
27,
28], the empirical data of this study are collected from 385 respondents who are more than 20 years old and eligible to participate in Taiwanese stock markets. Fifth, the findings of this study provide suggestions for governments and security practitioners to have good policies and promotion to encourage individual investors to invest in the stock markets, which would provide financial support for firms in pursuing sustainable development.
The remainder of this paper is structured as follows.
Section 2 provides the literature review on TPB; personality traits; and the moderating roles of gender, age, and experience, which are associated with the hypotheses in this study. The research design and methodology is described in
Section 3.
Section 4 describes the results related to the constructs’ reliabilities and discriminant validities in the measurement model and hypothesis tests in the structural model.
Section 5 concludes the paper with its theoretical remarks and practical implications and provides limitations and the directions for future research.
5. Conclusions and Implications
The primary topics in traditional finance include classical decision theory, rational behavior, risk aversion, model portfolio theory (MPT), CAPM, and EMH, which have been the leading paradigms for decades, suggesting that investors make choices rationally and thus maximize utility. However, empirical evidence has shown that the assumptions related to traditional finance are not supported [
84]. The research of behavioral finance initiated to observe investors’ behaviors to propose models describing how investors make decisions in investment. Behavioral finance incorporates the concepts of social sciences in understanding the investors’ behaviors. Nonetheless, previous topics in behavioral finance have been widely discussed regarding behavioral decision theory, prospect theory, overconfidence, herding, and disposition effects. The issues of the intentions of individual investors for stock investment have not been investigated well. This study provides the theoretical bases and empirical evidence to capture the stock investment intentions of the individuals, including those who participated in the stock market and those were not involved in the stock market yet, through their personality characters, attitudes, and cognitions.
To the best of the author’s knowledge, the current study is the first to show the linkages among the personality traits and perceptions of individual investors and their impacts on stock investment intentions. In contrast with previous studies that have investigated the impact of personality traits on investment choices and outcomes, which have been conducted on the basis of experimental or clinical designs with samples from undergraduate business [
28] and college student investors enrolled in a core finance unit (i.e., investment analysis) [
27], the current study collects data from 385 individuals who are more than 20 years old and eligible to participate in stock markets in Taiwan, including those with and without stock-trading experiences. The contributions of these results to the literature are numerous. First, this study provides evidence with empirical surveys to revalidate TPB in explaining the intentions of individuals to participate in stock investment. Subjective norm, attitude towards stock investment, and perceived behavioral control are all revealed to significantly influence the stock investment intention of an individual. Subjective norm is an individual’s perceived social pressure to perform or not to perform the behavior according to the opinion about what important others believe the individual should do. Individuals are inclined to conduct a behavior if the key person or organization encourages such a behavior. Therefore, having more media to report information about the facilities for stock investment and government policies to encourage stock investment will increase individuals’ intention to participate in the stock-investing activities. The attitudinal factor (e.g., the feelings that investing in the stock market can enhance the financial knowledge of individuals and is meaningful, enjoyable, and novel) is proved to affect individual intentions for stock investment. Hence, security firms can develop additional investment tools, such as mobile applications (Apps), financial analysis software, and online investment services, in which innovative investment portfolio techniques and knowledge are provided. Perceived behavioral control refers to individuals’ perceptions of their ability to perform stock-trading activities in this study. The government can improve the investment environments with transparent corporate information and fair-trading mechanisms. Security practitioners should improve the efficiency of infrastructure and technology systems to reduce individual investors’ time in stock trading. Providing individuals with accurate information in making investment decisions and simplified approaches to invest in stock markets will increase individuals’ intentions in stock investment. The empirical results also indicate that subjective norm has significant effects on attitude, implying that, if individuals’ peers or colleagues also invest in stock markets, their feelings about stock investment will be more positive.
Second, extending TPB with the big five personality traits, this study discovers that openness to experience and agreeableness significantly affect subjective norm. As expected, an individual with a preference for variety and intellectual curiosity (i.e., openness) is likely to be affected in forming his or her perceptions regarding social pressure from others. However, surprisingly, the impact of agreeableness on subjective norm is found to be significant and negative. The possible explanations could be that individuals who show personal warmth and cooperation with others still have their own opinions and less attention is paid to the peer influences regarding stock investment. Neuroticism is shown to affect an individual’s attitude toward stock investment significantly and negatively. For people who always feel inferior to others, anxious, and insecure tend to ascertain that stock investment is harmful and that people will lose money in stock trading. This finding would provide practical implications for the security practitioners that persuading anxious individuals to invest in the stock market would be difficult. Besides, agreeableness is identified to influence perceived behavioral control significantly and negatively. The findings reveal that individuals with agreeable personality may spend their money, time and energy in maintaining relationships with others and thus less control for performing stock trading is perceived. The effects of extroversion, conscientiousness and openness to experience on subjective norm are significant and positive. Accordingly, the security practitioners could attempt to search for persons who are cheerful and extroverted, strong-willed and conscientious, or individuals who are open to new things and ideas, because these individuals may have more time, energy, or money for participating in stock investment.
Third, the author utilizes the PLS–MGA techniques to unearth whether gender, age, and experience plays moderating roles in influencing the investment intentions of the individuals via their perceptions. Mayfield et al. [
50] reported that males have additional intentionality to make short-term and long-term investments and that individuals with great previous experience in financial investment tend to have higher intentions to make short-term investments. The empirical results of this study find that gender only has a significant effect on the linkage between conscientiousness and attitude and that age has a significant effect on the relationship between extroversion and perceived behavioral control. For conscientious individuals, men are more likely to be affected in forming their attitudes (i.e., opinions regarding whether stock investment is good or bad), compared with women. For extroverted people who are energetic, older individuals would perceive more ability for stock trading than younger ones. This study also ascertains that prior stock trading experiences have significant effects on the relationships between attitude and stock investment intention, as well as on the linkages between extroversion and subjective norm, attitude, and perceived behavioral control. Therefore, the government and security firms should make more effort to restore confidence among individual investors, particularly those who used to be active in the stock market, to form better attitudes towards stock investment and thus be willing to get back to the stock market. The security practitioners may promote several activities, such as marathon and charity events, to attract the customers who are energetic and active, particularly those having stock trading experiences, in order to enhance their recognition of stock investment which, in turn, affects their intentions to invest in stock markets.
Consequently, when these implications are incorporated into the initiatives of security firms and government in promoting stock market participation, the perceptions and attitudes toward stock investment will be enhanced. These initiatives will facilitate low-cost financing for firms, thereby leading to sustainable development.