Exploring Determinants of Tourists’ Ethical Behavior Intention for Sustainable Tourism: The Role of Both Pursuit of Happiness and Normative Goal Framing

: This study explored variables that determine outbound Korean tourists’ ethical behavior intention during their visits of Southeast Asian countries and analyzed the inﬂuencing relationship between them in an integrated manner. The results from the partial least squares path modeling of the R statistical program demonstrate that the pursuit of hedonic and eudaimonic motives plays a positive role in activating normative goal framing which supports tourists’ ethical behavior intention. This study therefore empirically proved the important roles of both the pursuit of happiness in daily life and normative goal framing as motivators that enhance ethical behavior intention at tourist destinations to achieve the goal of sustainable tourism after the pandemic.


Introduction
Prior to the global outbreak of COVID-19, the tourism industry had grown to 10% of the world's GDP in 2017, and the number of overseas tourists reached 1.3 billion, a 7% increase from the previous year [1] The outbound Korean tourist market grew noticeably in the past decade reaching 28 million in 2018, 2.4 times larger than the previous decade [2]. However, according to annual reports released by the US State Department [3] and End Child Prostitution Child Pornography and Trafficking of Children for Sexual Purposes (ECPAT), Korean tourists are the main perpetrators of such crimes in Southeast Asia. The Guardian [4] cited the Philippine Tourism Agency as stating that most tourists travelling to the Philippines for sex trafficking are from Korea, the US, China, and Australia. Additionally, due to environmental pollution, a famous tourist destination, Boracay, was forced to close temporarily [5]. The same is true for Bali and Maya Bay, which regularly take measures to prohibit or temporarily prevent tourists from swimming [6]. The aforementioned examples demonstrate that it is necessary to rethink the role of tourism, the necessity for ethical behavior, and the attitudes of tourists. Tourism should be viewed as a way of satisfying one's desires or needs and be recognized as a series of sociocultural, economic, and environmental phenomena that affect individuals, regions, and international communities.
In discussing ethical behavior, the role of tourists is paramount, because as with other consumption, their choices and actions are responsible for outcomes [7]. However, demanding ethical behavior requiring tourists to be responsible and dutiful is not simple because tourists normally tend to pursue fun and pleasure while traveling and desire to escape restrictions or daily routines [8,9]. Moreover, it is difficult for individual tourists to predict the outcomes of their ethical or unethical behavior [10,11]. Nevertheless, for sustainable tourism, given that tourists' interest in experiencing local cultures or natural environments has increased, their sense of responsibility and ethical behavior must be encouraged [9,12].
Tourists' ethical behavior involves a change in thinking and behavior that allows for critical reflection about tourists' own behavior related to environmental, economic, and sociocultural aspects within sustainable tourism such as ecology, responsibility, fairness, and ethics [13,14]. In fact, similar research on tourists' behavior has been increasing significantly since 2000, but most have leaned heavily on pro-environmental aspects [9,10,15]. Moreover, some studies utilized tourists' ethical behavior as a simple variable without classifications [16,17] and only a few studies begun it to be categorized into different types [9,[18][19][20][21][22]. However, when considering the role and impact of tourism from a holistic aspect, including sociocultural, economic, and environmental perspectives, the limitations of past research reveal the need to expand the scope and diversity of study on tourists' ethical behavior intention.
What then could determine tourists' ethical behavior? First, goal framing refers to the phenomenon that a focal goal such as hedonic, gain, or normative framing influences cognitive processes, interpretations, decision making, and behavior [23]. Normative goal framing among the three goals mainly elicits pro-social and altruistic behavior [24,25]. Furthermore, to apply the goal framing theory effectively, situational factors should be considered together [23,26]. However, previous studies related to behavior in the context of tourism have not thoroughly dealt with this theory and the role of normative goal framing as a focal goal remains uncertain. Second, happiness could be related to a condition for creating a good life [27] or an ethical phenomenon [28]. From this perspective, a concept was developed that highlights individual volition for the pursuit of happiness in daily life [29,30]. The pursuit of happiness is divided into hedonic and eudaimonic motives [29] that function as important motives or goals and elicit certain behaviors just as values do [31,32]. However, most prior research has interpreted happiness as a single dimension of an emotional state or outcome variable [17,33], and there are insufficient studies examining the relationship between the pursuit of happiness and various social phenomena and human behavior [32,34]. Third, actual behavior is controlled by focal goals, and abstract goals, such as value or happiness, motivate focal goals [35][36][37][38]. Accordingly, in terms of overall decision-making processes that lead to tourists' ethical behavior intention, the pursuit of happiness is expected to activate tourists' normative goal framing as well as actual behavior. Therefore, the integrative relationship among variables is also necessary to investigate.
Upon the abovementioned backdrop and the research gap, the goals of this study are as follows: First, to examine the impact of normative goal framing on both basic and extra levels of ethical behavior intention at tourist sites. Second, to examine the impact of pursuing hedonic and eudaimonic motives in daily life on tourists' normative goal framing. Third, to examine the impact of the pursuit of happiness on different levels of tourists' ethical behavior intention. This allows us to identify the factors that influence ethical behavior intention of tourists from multiple perspectives. To be specific, this is significant in that it interprets happiness as an abstract motive for determining tourists' ethical behavior intention and build the relationship together with a focal goal and different levels of behavior intention in an integrated way. Not only the tourists themselves, but tourist operators, governments, and policy makers are required to play various roles and make efforts to induce and revitalize tourists' ethical behavior. This study, therefore, suggests practical measures based on the results of detailed analysis.

Tourists' Ethical Behavior Intention
Tourists' ethical behavior entails environmental preservation and considers the fair distribution of economic benefits such as the pay and welfare of those who are working in the tourism industry [15], while showing respect for local cultures at tourist sites [39]. Nonetheless, only recently, studies have begun to examine diverse ethical behavior in phases or categories. Wooliscroft et al. [22] classified ethical behavior as basic levels that most people can display, and comparatively difficult levels that require advanced application and willingness. This also can be interpreted as a hierarchy of ethical consumption behavior [22]. Geng et al. [20] argued that there are different types of pro-environmental behavior; some are costly or inconvenient with high constraints, others are almost free, easy to do, and more predictable, with less demanding conditions [40,41].
In the field of tourism, François-Lecompte and Prim-Allaz [18] divided responsible tourism into two categories: neo-sustainable and adventure-sustainable. Dolnicar [42] and Dwyer et al. [43] emphasized that studies about tourists' ethical behavior should comprehensively include contents about economic, physical, and social behavior. Additionally, Lee et al. [21] categorized environmentally responsible behavior at tourist sites as follows: behavior that conserves nature and minimize disruptions to the environment; behavior that voluntarily avoids visiting areas suffering from environmental destruction; and behavior that reduces environmental damage. Ganglmair-Wooliscroft and Wooliscroft [9] argued that tourists who are good at manifesting high levels of ethical behavior that requires relatively more time and money can be predicted to engage in basic levels of ethical behavior successfully. Gao et al. [19] classified tourists' ideal responsible behavior into basic responsibility, which demands relatively low-cost and neutral behavior and extra responsibility, which demands high-cost and proactive behavior.
Behavior intention refers to the likelihood of transferring one's subjective perception or emotions to behavior [44]. Behavior intention has the greatest impact on behavior, and plays a mediating role between attitude and behavior [45]. Behavior intention is a determinant factor for actual behavior; therefore, it can precisely measure and predict future behavior [46,47]. It is also known as a surrogate variable of actual behavior [46][47][48][49]. For example, in previous studies regarding pro-environmental behavior, pro-environmental attitudes did not always result in aligned behavior [20,50] but behavior intention increases the likelihood of exhibiting actual behavior when one has a favorable attitude toward the environment [51,52].

Normative Goal Framing
Studies on goal framing began relatively recently, in the 2000s. Lindenberg and Steg [23] structuralized the related theory based on cognitive social psychology that discussed the impact of goals on a person's cognition process. According to the theory, there are three focal goal framings: hedonic, gain, and normative [23,26].
Normative goal framing is the mindset to behave appropriately by focusing on environmental or social gain under certain conditions or situations [20,23,26,53] and is a focal goal when it comes to altruistic behavior related to the pro-social or pro-environmental field [23,24,26]. People tend to set aside other goals, such as their emotions, personal interests, or satisfaction, and focus on environmental or social gains when normative goals are strong [20]. Normative goals are sensitive to one's own behavior and to that of others [54,55]. The related literature has proven that normative goal framing motivates pro-environmental or socially beneficial behavior via consumers [56], Indian students [24], and American teachers [57].
Similarly, Steg and De Groot [58], Chatzidakis et al. [59], and Ateş [60] verified a positive effect of consumers' personal norms on pro-social behavior. Wang et al. [61] proved that tourists' personal norms exerted a significantly positive effect on pro-environmental behavior intention at tourist sites, and other studies claimed that personal norms have positive effects on different kinds of ethical behavior and a greater effect on less strict levels of ethical behavior [19,22,40].

H1.
Normative goal framing will exert a significant effect on tourists' ethical behavior intention.
H1a. Normative goal framing will exert a positive effect on basic levels of ethical behavior intention.
H1b. Normative goal framing will exert a positive effect on extra levels of ethical behavior intention.

The Pursuit of Happiness
Goal structure, having a hierarchy of abstract goals, focal goals, and lower-level goals, is related to a certain level of action plan that a consumer is aiming for, and abstract goals, in their essence, provide the ultimate motives and reasons to determine their behavior [37,62]. Actual behavior is controlled by a focal goal, the middle level in goal hierarchy, and an abstract goal provides a motive to pursue a focal goal [37,38]. In this sense, happiness is a core and high value of our lives [63] and could be one of the abstract goals of human life [35,36].
Meanwhile, researchers started to pay fresh attention to the function of happiness as a cause of socially occurring events, not just as an outcome [32] and have proven that happiness has a positive effect on altruistic behavior, improves sociability, and drives organizational success [64][65][66]. Moreover, happiness can determine the degree of social development or progress [32,67] and has a positive effect on pro-social behavior [35,68,69]. While happiness and values are not the same, they are similar in terms of ultimate motives and direction of human behavior [31]. There are two well-known studies that have interpreted happiness from the perspective of motives: Peterson et al. [30] addressed orientation to happiness as comprising of a life of pleasure, engagement, and meaning; and Huta and Ryan [29] suggested hedonic and eudaimonic motives. Both studies highlighted that seeking different motives in a harmonious manner is the best way to maintain chronic happiness [29,30]. There is no guarantee that the pursuit of happiness realizes all intention, but it is an important driving force leading to specific actions [32].
The pursuit of hedonic motives is the tendency to seek joy or comfort in the present moment by using physical, mental, or social means [31,32,70]; the tendency to maximize pleasure and minimize physical or mental pain [30]. This is a similar view as the idea of the life of pleasure by Peterson et al. [30] and highlights the state of positive emotions [9,29]. It can help a person to restore physical and psychological energy by boosting or refreshing one's subjective energy [29]. It was mainly known that the pursuit of hedonic motives values comfort and peace, and escape from worries and anxiety through emotional and cognitive self-regulation [29]. However, in more recent studies, Igarashi [71] argued that the pursuit of hedonic motives can contribute to a good life, health, social participation as well as success, and Yang et al. [72] verified that a life of pleasure has a positive effect on pro-social behavior and subjective wellbeing.
The pursuit of eudaimonic motives is for growth and creating meaning for oneself and others, while seeking a higher level of happiness [29]. It refers to the tendency to discover meaning and value in life [71] and to live an integrated life of engagement and meaning [30]. It not only seeks to improve levels of optimism, happiness, and positive emotions but is related to other people's wellbeing or welfare [30]. In addition, it has a positive effect on career development and sense of accomplishment [32,73], and pro-social behavior that keeps in mind social attention or other people [72].
In addition, Malone et al. [10] asserted the necessity to induce pleasure and enjoyment for tourists who seek hedonism, since those emotions can motivate their ethical behavior. Ganglmair-Wooliscroft and Wooliscroft [9] stated that a life of pleasure has a positive effect on tourists' ethical behavior in the same way as a life of meaning does. Caruana et al. [8] asserted that tourists who value pleasure implement the mechanism of self-regulation for the purpose of feeling joy, avoiding discomfort, and engaging in ethical behavior. Through this self-regulating mechanism, they control themselves, observe local culture, and compare their materialistic consumption behavior with the economic condition of local residents at tourist sites [39]. These findings show that, not only the pursuit of eudaimonic motives, but that of hedonic motives, can contribute to good life, health, and social participation [71]. In this sense, tourists who practice the pursuit of hedonic motives are more likely to regulate themselves and act ethical behavior in order to avoid uncomfortable emotions and to experience pleasure at tourist sites [10,39,57]. Therefore, we hypothesize: H2. The pursuit of happiness will exert a significant effect on tourists' normative goal framing. H2a. The pursuit of hedonic motives will exert a positive effect on tourists' normative goal framing.
H2b. The pursuit of eudaimonic motives will exert a positive effect on tourists' normative goal framing.
H3. The pursuit of happiness will exert a significant effect on tourists' ethical behavior intention.
H3a. The pursuit of hedonic motives will exert a positive effect on basic levels of ethical behavior intention.
H3b. The pursuit of hedonic motives will exert a positive effect on extra levels of ethical behavior intention.
H3c. The pursuit of eudaimonic motives will exert a positive effect on basic levels of ethical behavior intention.
H3d. The pursuit of eudaimonic motives will exert a positive effect on extra levels of ethical behavior intention.

Research Model
The purpose of this study is to examine the factors that determine tourists' ethical behavior intention and to systematically analyze the influencing relationship between them to identify the process of determining the ethical behavior of tourists in an integrated manner. Therefore, we established a causal relationship between the pursuit of hedonic and eudaimonic motives (abstract goal), normative goal framing (focal goal), and ethical behavior intention, and created a new research model as shown in Figure 1.
are more likely to regulate themselves and act ethical behavior in order to avoid uncom-fortable emotions and to experience pleasure at tourist sites [10,39,57]. Therefore, we hypothesize: H2. The pursuit of happiness will exert a significant effect on tourists' normative goal framing.
H2a. The pursuit of hedonic motives will exert a positive effect on tourists' normative goal framing.
H2b. The pursuit of eudaimonic motives will exert a positive effect on tourists' normative goal framing. H3. The pursuit of happiness will exert a significant effect on tourists' ethical behavior intention.
H3a. The pursuit of hedonic motives will exert a positive effect on basic levels of ethical behavior intention.
H3b. The pursuit of hedonic motives will exert a positive effect on extra levels of ethical behavior intention.
H3c. The pursuit of eudaimonic motives will exert a positive effect on basic levels of ethical behavior intention.
H3d. The pursuit of eudaimonic motives will exert a positive effect on extra levels of ethical behavior intention.

Research Model
The purpose of this study is to examine the factors that determine tourists' ethical behavior intention and to systematically analyze the influencing relationship between them to identify the process of determining the ethical behavior of tourists in an integrated manner. Therefore, we established a causal relationship between the pursuit of hedonic and eudaimonic motives (abstract goal), normative goal framing (focal goal), and ethical behavior intention, and created a new research model as shown in Figure 1.

Sample and Data Collection
This study focused on the factors that affect the ethical behavior intention of Korean tourists visiting member countries of the Association of South-East Asian Nations (ASEAN) such as Singapore, Thailand, Vietnam, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Cambodia, and Brunei. The ASEAN has developed into a region where the tourism industry, as well as economic and socio-cultural development, is the fastest growing [74]. This region is highly preferred by Korean tourists, and according to 2019 data, countries of Southeast Asia such as Vietnam and Thailand, ranked highest among tourist destinations visited by Koreans [75].
The sample selected for this study comprised Korean adults who were 20 years or older and had traveled to Southeast Asia. According to the questionnaire survey, 77.5% of Sustainability 2022, 14, 9384 6 of 17 respondents expressed their intention to revisit the same tourist sites [76]. The intention to revisit China or Hong Kong was relatively low, while the intention to revisit Southeast Asia was relatively high [76]. In other words, tourists who experienced traveling in Southeast Asia are more likely to return.
Purposive sampling and quota sampling based on gender and age were selected among non-probability sampling for the following reasons: First, we paid close attention to the findings of similar studies that dealt with tourists' responsible attitudes or behavior. They found that gender and age reflect significant differences in tourists' attitudes related to responsible tourism [77]; those with a pro-environmental attitude are either older or women, while those without are either young or men [78]. Second, the online survey used for data collection in this study had the advantage of enabling quick and efficient collection of responses from users, allowing access to a wider range of consumers compared to the field survey method [79,80]. However, many prior online studies had more female respondents than males [81][82][83]. Third, the number of Korean female tourists was almost equal to males and the number of outbound travelers by age was slightly higher for those in their 30s and slightly lower for those in their 60s, while other age groups were almost evenly distributed [75]. Therefore, we attempted to increase the representativeness by appropriately reflecting the characteristics of population without biasing the sample [84].
The questionnaire survey was conducted in two steps to check the comprehensibility of questionnaire items and to improve the accuracy of the survey. First, using a draft questionnaire for graduate students at tourism department in Korea, 10 copies were surveyed to ascertain respondent understanding. Second, we conducted a preliminary survey using 50 self-reporting questionnaires on an online survey site among people with experience of traveling to Southeast Asia. We received feedback from respondents on ambiguity and revised unclear terminology to be more comprehensible. After two revisions, we eliminated items with low content validity and prepared the final version for the main survey. The online survey was conducted with the final version of the questionnaire through Korea's largest online research company (embrain.com), and the data collected through self-reporting responses. The overall temporal scope of the survey from the preliminary period was from June to August 2019. The related link to the questionnaire was sent to the online panels via email, and as a filtering question, all the respondents were first asked if they had traveled to Southeast Asia within the past 3 years. A total of 6175 emails were sent and 843 without travelling experience to Southeast Asia within the past 3 years were eliminated. As a result, 480 samples were collected and 432 were used for analysis after excluding 48 incomplete or insincere copies.

Measurement Development
The variables for testing hypotheses based on the research model were the pursuit of happiness, normative goal framing, and ethical behavior intention. To evaluate these variables, measurement items were constructed by extracting and applying the related contents verified in previous studies according to the topic and purpose of this study (i.e., [9,19,21,23,24,29,30,32,53,57,59,77,[85][86][87]). Four items were used to measure the pursuit of hedonic motives (e.g., "I am seeking enjoyment in everyday life"). Five items were used to measure the pursuit of eudaimonic motives (e.g., "I am seeking to pursue excellence in everyday life"). Normative goal framing was evaluated with four items (e.g., "During my travel, to act according to moral principles is important"). Basic levels of ethical behavior intention were evaluated with five items (e.g., "During my travel, I will respect local culture and tradition"). Four measurement items were utilized for extra levels of ethical behavior intention requiring relatively more time, money, and proactiveness (e.g., "During my travel, I will not visit sites where the environment can be damaged"). All questionnaire items except for six general information about demographics were measured using a 5-point Likert scale (1 = strongly disagree to 5 = strongly agree).

Data Analysis
To analyze the questionnaires collected, we mainly utilized the R statistical program widely used in relation to recent big data analysis. R is an open-source program that supports diverse statistical packages, and in this study, partial least squares path modeling (PLSPM) was chosen. PLSPM supports partial least squares structural equation modeling (PLS-SEM) that can quantitatively identify the causal relationship between factors. Additionally, it has the advantage of particularly high efficiency because it evaluates the reliability and validity required for the analysis of SEM by using the characteristics of R, a script-type language [88].

Sample and Descriptive Statistical Analysis
We performed frequency analysis to examine the characteristics of the collected data from the sample population and descriptive statistical analysis was followed to check for extremely non-normal distribution of data.

Descriptive Statistical Analysis
In PLS-SEM, assumptions are not made about data distribution. This contrasts with covariance-based structural equation modeling (CB-SEM), in which distinguishing between normal distribution and non-normal distribution is important. However, it is necessary to check its extremity because extreme non-normal distribution can affect the significance of causal relationships through bootstrapping [89].
Therefore, descriptive statistical analysis, including skewness and kurtosis, was performed (Table 1). The skewness of all variables was below an absolute value of 1, and kurtosis was below an absolute value of 2, which indicates that data distribution was not extreme and at an adequate level of normalcy [90].

Evaluation of Models
The evaluation of outer model in PLS-SEM is an evaluation of reliability and validity of the measurement indicators, and is necessary to verify internal consistency reliability, convergent validity, and discriminant validity [88,91]. The evaluation of the inner model assesses the causal relationship between latent variables and entails a comprehensive analysis of coefficients of determination R 2 , GoF index, and path coefficients [88].

Evaluation of Outer Model
Internal consistency reliability was examined with Cronbach's α, a conventional reliability evaluation method, and Dillon-Goldstein's rho value, deemed a preferable reliability evaluation item through considering different loadings of measurement variables [88,89]. The result showed no problems with reliability as both values were above 0.7. In PLS-SEM, the evaluation of convergent validity requires average variance extracted (AVE) values and must consider the outer loading of each indicator and its statistical significance [89]. The results had no issues as all the AVE values were above 0.5 and most factor loadings were above 0.7, with some above 0.6 [92] (Appendix A). The result of examining statistical significance by calculating t-value and indicator reliability, including minimum value (perc 0.025) and maximum value (perc 0.975), showed that values between the upper and lower limits did not include 0 and all indicators were statistically significant (t-value >1.96). The loading of each measurement indicator belonging to each latent variable was significantly higher than the cross loading of these measurement indicators in other latent variables. Fornell-Larcker's criteria was also satisfied as the square root value of AVE of each latent variable was found to be greater than the highest correlation with other latent variables. Accordingly, both convergent validity and discriminant validity were secured (Tables 2 and 3). Next, we evaluated the inner model. Cohen [93] proposed the explanatory power for R 2 to be small = 0.02, medium = 0.13, and large = 0.26, while Hair et al. [89] stated that an R 2 of 0.20 is high in the studies of consumer behavior but a higher R 2 value is required in the field of marketing. In a PLS model, the value of each factor at 10% and higher is said to have explanatory power [94]. In this study, R 2 values had no problems with explanatory power as it was 0.137 for normative goal framing, 0.277 for basic levels of ethical behavior intention, and 0.252 for extra levels of ethical behavior intention. Tenenhaus et al. [95] proposed GoF with a range from 0 to 1 as an index for the overall fit of an inner model in PLS and recommended a minimum of 0.36 as the standard. Some scholars disagree that GoF is an ideal index for examining the adequacy of a model [96]; nonetheless, the GoF index for this study was 0.361. The path coefficient is a causal relationship between latent variables, and the hypothesis established can be tested through path analysis. According to analysis results, seven out of eight hypotheses were supported when t value (t > ±1.96), confidence interval calculated by boosting, was used as a standard.
Hypothesis H1a and H1b were supported. Normative goal framing was found to have a significantly positive effect on basic levels (b = 0.422, p < 0.001) and extra levels (b = 0.096, p < 0.05) of ethical behavior intention. Hypotheses H2a and H2b were supported. The pursuit of hedonic motives exerted a significantly positive effect on normative goal framing (b = 0.188, p < 0.001) as did the pursuit of eudaimonic motives (b = 0.260, p < 0.001). Hypothesis H3a was rejected while H3b, H3c, and H3d were supported. The pursuit of hedonic motives exerted no significant effect on basic levels (b = 0.027, n.s.) but a significantly positive effect on extra levels (b = 0.117, p < 0.05) of ethical behavior intention. Lastly, the pursuit of eudaimonic motives was found to exert a significantly positive effect on both basic levels (b = 0.190, p < 0.001) and extra levels (b = 0.406, p < 0.001) of ethical behavior intention (Table 4) (Figure 2).

Additional Analysis
Based on the above hypotheses testing, we additionally conducted Sobel Test to see the role of normative goal framing as a mediator between the pursuit of happiness and ethical behavior intention. As a result, though there was no direct effect between the pursuit of hedonic motives and basic levels of ethical behavior intention (b = 0.027, n.s.), normative goal framing acted as a full mediator among two factors. On the other hand, it was

Additional Analysis
Based on the above hypotheses testing, we additionally conducted Sobel Test to see the role of normative goal framing as a mediator between the pursuit of happiness and ethical behavior intention. As a result, though there was no direct effect between the pursuit of hedonic motives and basic levels of ethical behavior intention (b = 0.027, n.s.), normative goal framing acted as a full mediator among two factors. On the other hand, it was shown that normative goal framing did not act as a mediator between the pursuit of hedonic motives and extra levels of ethical behavior intention. In the path of eudaimonic motives and basic or extra levels of ethical behavior intention, normative goal framing acted as a partial mediator (Table 5).

Discussion
In this study, we used the pursuit of happiness, normative goal framing, and behavior intention as variables to examine overall decision-making processes that lead to tourists' ethical behavior intention. A new research model was presented and verified to predict causal relationships between variables.
First, normative goal framing exerts a significantly positive effect on both basic levels (b = 0.422, p < 0.001) and extra levels (b = 0.096, p < 0.05) of ethical behavior intention. This supports the previous studies of Chakraborty et al. [24], Lindenberg and Steg [23,26], Liobikienė and Juknys [56], and Miao and Wei [57] who argued that it is desirable for normative goal framing to act as a focal goal for altruistic behavior such as pro-social or eco-friendly behavior. In other words, it was proved that activating tourists' normative goal framing at tourist sites can be an important motivator for both basic and extra levels of ethical behavior intention and has a relatively greater effect on basic levels.
Second, the pursuit of hedonic and eudaimonic motives exerts a significantly positive effect on normative goal framing respectively (b = 0.188, p < 0.001) (b = 0.260, p < 0.001). This supports previous findings by Huta and Ryan [29], Igarashi [70], and Yang et al. [72], who discussed the positive impact of pursuing these motives on society. It is also similar to the finding of Caruana et al. [8] that those who normally value pleasure activate self-regulation mechanisms at tourist sites because they desire to feel joy and avoid negative emotions during their travel. In other words, it is proved that pursuing hedonic or eudaimonic motives in daily life plays a role in activating tourists' normative goal framing. It is noteworthy that seeking hedonic motives can also act positively for normative goal framing at tourist sites.
Meanwhile, previous studies maintained that tourists seek pleasure and have the psychological trait to escape restraints while traveling [8,9]. In other words, it is not easy to activate normative goal framing at tourist sites, and an unconscious motivator is required to improve it. In this aspect, this study found that the pursuit of hedonic or eudaimonic motives in daily life can take this role and, at the same time, serve as a driving force to increase tourists' ethical behavior intention.
Third, the pursuit of hedonic motives exerted a significantly positive effect on extra levels (b = 0.117, p < 0.05) of ethical behavior intention. Moreover, the pursuit of eudaimonic motives exerted a significantly positive effect on both basic (b = 0.190, p < 0.001) and extra levels (b = 0.406, p < 0.001) of ethical behavior intention. This supports previous findings that happiness affects a person's decision making and induces pro-social behavior [68] and the pursuit of eudaimonic motives has the most positive effect and hedonic motives also has a weak but positive effect on tourists' pro-environmental behavior [9]. This is similar to the findings of Caruana et al. [8], Malone et al. [10], and Miao and Wei [57], that tourists are more likely to practice ethical behavior to avoid an uncomfortable mood at tourist sites.
Lastly, contrary to expectations, the pursuit of hedonic motives did not show a significant effect on basic levels (b = 0.027, n.s.) of ethical behavior intention. This might reflect that pursuit of happiness can function as a driving force for a certain behavior, but it does not always guarantee the practice of behavior [32]. However, with the regard to this result, it is necessary to pay attention to the role of normative goal framing as a mediator according to the above additional analysis. In other words, the pursuit of hedonic motives in daily life is not enough to activate the basic levels of ethical behavior directly, but normative goal framing can act between the two variables to help tourists put them into practice.

Conclusions and Implications
This study was intended to provide a theoretical basis for examining overall decisionmaking processes leading to tourists' ethical behavior intention from an integrated perspective. To this end, based on previous studies, the pursuit of happiness as an abstract motive or goal of a specific behavior, normative goal framing that directly affects behavior in the cognitive process, and behavior intention, known as a variable that more directly affects behavior, were utilized. The main contributions are as follows; First, the relationship between the pursuit of happiness and normative goal framing of tourists was newly verified by expanding the scope of research utilizing goal framing theory. The results showed that the impact of pursuing hedonic and eudaimonic motives on normative goal framing was relatively different, but both have positive roles in normative goal framing.
Second, this study attempted to avoid either an extremely macroscopic or microscopic perspective on tourists' ethical behavior intention and stressed the need to change tourists' perceptions more systematically and to induce ethical behavior. To this end, it intended to contribute to the expansion of research diversity and discussion by encompassing not only the environmental but social and economic aspects.
Third, this study categorized tourists' ethical behavior intention into two types and attempted to identify causal relationships with other variables. The results showed a significant relationship by verifying that activation of normative goal framing through pursuing hedonic or eudaimonic motives in daily life has a positive role on basic and extra levels of ethical behavior intention. Therefore, this study provided a comprehensive view of the overall decision-making process that affects different levels of tourists' ethical behavior intention.
Finally, this study verified that happiness can function as an abstract motive for tourists' ethical behavior intention. The results showed that the pursuit of happiness, either directly or indirectly, affects tourists' ethical behavior intention and functions as a driving power for a certain mindset or behavior. Accordingly, by proving that the pursuit of happiness has a role as an explanatory variable that affects tourists' behavior, it suggested the necessity of further studies on happiness in the field of tourism.
This study also provided practical implications in three different ways. First, normative goal framing exerts a positive effect on both basic and extra levels of ethical behavior intention. Therefore, stakeholders at airports, famous tourist sites, and lodgings such as hotels need to actively implement measures to improve normative goal framing. However, it is not easy to activate normative goal framing, since other goal framings can easily replace it when people wish to have high regard for normative goals and behave appropriately but do not know how [23,26]. Thus, it is critical to clearly inform them which behaviors are appropriate. For example, a government organization that has jurisdiction over a specific tourist destination can summarize regulations within the area in writing using multinational languages and provide brief explanations using online or virtual reality devices from the moment tourists enter airports. Hotels, restaurants, and transporters need to make their own templates, cards, or videos about ethical behavior rules to be followed in the facilities they operate, and actively share them. In other words, when attempting to promote tourists' ethical behavior with the goal of sustainable tourism, concrete measures and active practices are required for activating normative goal framing. Moreover, outbound tourists can positively contribute to inbound tourism to their home country and interest in their culture; however, their unethical behavior can damage the national image and rather curtail inbound tourism [97]. In this sense, it is required to emphasize the educational aspect in the longer term. For example, it is necessary to proactively run educational programs related to ethical behavior at schools. Developing a mature civic awareness in adolescents can not only build normative goal framing but strengthen personal and social standards by consensus throughout the society, and could facilitate ethical behavior as tourists.
Second, it was found that the pursuit of happiness, which is an individual's effort to pursue happiness in daily life, has a positive effect on the formation of normative goal framing as a tourist. Therefore, it is worthy that individuals make efforts to continuously pursue happiness; however, in this, people are inevitably influenced by society or the country to which they belong [98]. Moreover, since tourism has an organic relationship with various social phenomena, it influences the environment, society, economy, and so forth, but, at the same time, is affected by them [15,42]. Thus, it is important to create social atmospheres that actively encourage the pursuit of happiness, not only to facilitate normative goal framing as tourists, but for many other social situations.
Third, the pursuit of happiness was found to exert a directly or indirectly positive effect on tourists' ethical behavior intention. Particularly, in consideration of the direct and positive role of eudaimonic motives, creating a social atmosphere that values them can foster the growth and harmony of society beyond tourism.

Limitations and Future Research
This study contributed to explore the overall decision-making process that leads to tourists' ethical behavior intention. In particular, the pursuit of happiness, normative goal framing, and behavior intention are utilized as variables and proposed a new research model to verify causal relationships between variables. Nevertheless, this study has limitations. First, we selected ethical behavior intention as an outcome variable based on previous findings that intention is the proxy variable that can best predict actual behavior [46,47,49]. Nonetheless, it is probable that tourists' ethical behavior intention can differ from actual behavior. Therefore, a follow-up study is required using the same model to measure tourists' actual ethical behavior and to examine whether there is any disparity between intention and actual behavior.
Second, this study mainly concentrated on presenting a new research model based on literature reviews and testing hypotheses by verifying relationships between variables. Thus, moderating effects were not examined. Future research can provide more practical implications by comparing the moderating effect of demographic factors.
Third, this study is limited in that it did not include tourists who have not traveled to Southeast Asia or tourists who have traveled to other countries. Therefore, follow-up studies can examine differences among groups visiting various destinations. Furthermore, if the same research model is applied after the pandemic and compared with the results of the current study, further insights can be added. Informed Consent Statement: Informed consent was obtained from all subjects involved in the study.

Data Availability Statement:
The data presented in this study are available on request from the corresponding author.