When consumers are faced with various discounts, they are likely to find some easier to comprehend than others and this degree of difficulty will impact purchase decisions. This study explains complexity as a dimension of psychological distance using different types of discounts. Current research examines that easy-to-process discounts appear near and difficult-to-process discounts appear far. Applying construal level theory, this research investigates that the dollar discount leads to higher likeability of the attribute-appeal message and the percent discount lead to higher likeability of the benefit-appeal message. The dollar discount is low-level construal, as is an attribute message (i.e., how approach) whereas the percentage discount is high-level construal like a benefit message (i.e., why approach).

Reports indicate that in 2017, social commerce had become a 20 billion dollar industry. Given the developing world’s fatigue with social media, social commerce growth will likely be fueled by consumers from developing economies. While literature has investigated social commerce in the context of established brands in developed economies (e.g. Kim and Ko, 2012), it cannot yet explain consumers’ engagement with the uniqueness of social media commerce in developing economies. Social commerce in Southeast Asian economies are largely conducted amongst individuals or micro businesses. Since social media platforms largely do not provide commerce security nor support, consumers are more vulnerable to fraudulent practices. What factors motivate these purchases despite such risks? This study offers insights into how consumers’ motivated reasoning influences their willingness to purchase over social media. We focus on the social media store’s ease of use and perceived security as antecedents of trust. Specifically, we argue that perceiving a lack of ability to purchase from other channels would induce higher trust towards a social media store, despite low perceptions of ease and security of transaction. Data was collected from 224 Indonesian social media users who have been exposed to social media stores on Instagram. The findings suggest that when consumers perceive high control of how they could obtain desired goods, trust becomes a logical function of the perceived safety and ease of use of the shops. However, under low perceived control, consumers display high trust in social media shops despite not being convinced that they are safe nor easy to use. The findings extend our understanding about the antecedents of value creation in social commerce (Stephen and Toubia, 2010). Our results enrich prior literature by showing how motivated reasoning leads to biases in judgment to be in favor of desired goals (Blanton and Gerrard, 1997), and extends it in the novel context of social media commerce. Furthermore, by incorporating the literature on perceived behavioral control and motivated reasoning, the current study provides important empirical evidence for the presence of perceived control over alternate channels as a significant driver for trust towards social media shops. The current research also has a number of implications for social commerce providers in developing economies. This study shows that it is advantageous for managers to cultivate trust using interactivity and reliability to elicit a sense of security and ease of use. However, our findings also offers a caution for firms to not be lulled into a false sense of comfort by taking consumers’ trust at face value.

This research examines the impact of closing versus opening eyes on consumers’ decision making as to whether the decision context is driven by utilitarian versus hedonic motivation. The findings from three studies show that consumers processing advertising messages with their eyes closed are likely to use high-level, abstract processing, and thus more positively evaluate the utilitarian products (vs. the hedonic products). On the contrary, consumers with their eyes open are likely to use low-level, concrete processing, and thus more positively evaluate the hedonic products (vs. the utilitarian products). Implications for consumers and marketers are discussed.

Introduction Social media continues to grow and presents in our everyday lives. Consumers can even know about celebrities’ personal lives and hear directly from celebrities through social media, such as Facebook and Instagram. Chung and Cho (2017) point out that social media provides a platform for a more open, close and frequent interaction between consumers and celebrities. According to Lee and Watkins (2016), by using social media, consumers can easily and quickly access user generated content which includes product information and reviews. People create video blog (vlog) and some have attracted a large number of followers, video bloggers (vloggers) upload videos about their personal life or reviews of product they use, therefore increasing browsing traffic from followers and other viewers. As a result, vloggers become vlog celebrities or key opinion leaders on social media nowadays. According to Horton and Wohl (1956), parasocial interaction (PSI) explains the relationship between media persona and media user, and it is referred to a media user’s reaction to a media persona, in a way that the media persona is perceived as an intimate conversational partner by the media user. The media persona may be considered by his/her audience as a friend, counselor, comforter and model, and PSI is considered as a “friendship” with a media persona (Perse & Rubin, 1989). As this “friendship” continues to grow, the media user will gradually treat the media persona as a trustworthy friend and rely on their suggestions as a trusted source of information (Rubin et al., 1985). According to Stever and Lawson (2013), PSI is an appropriate theoretical framework for studying the one-sided relationship between celebrities and fans; so the same argument can be extended to vlogger as suggested by Lee and Watkins (2016). As there is limited studies investigating the link between vlogger and marketing results in the literature, and researches examining the relationships between PSI and perceived brand quality, brand affect as well as brand preference are rare and lack empirical support, therefore, some research gaps need to be bridged. This study develops an integrated model according to the literature review. It is expected to help marketers to understand the influence of vlogger, and to develop efficient social media marketing tactics and branding strategies by using PSI as a brand management tool. Literature review and hypothesis development Parasocial interaction (PSI) explains the relationship between media persona and media user, and it is referred to a media user’s reaction to a media persona, in a way that the media persona is perceived as an intimate conversational partner by the media user. Previous studies indicate that PSI develops in ways similar to interpersonal relationships with friends (Horton & Wohl, 1956; Rubin & McHugh, 1987; Perse & Rubin, 1989), so the media persona may be considered by his/her audience as a friend, counselor, comforter and model, and PSI is considered as a “friendship” with a media persona (Perse & Rubin, 1989). Labrecque (2014) suggests that the development of PSI is not restricted to traditional media but also in an online environment. Labrecque (2014) points out that the higher the perceived level of openness and interaction in communication between consumers and brands on social media, the stronger their PSI with the brands. A direct relationship is also found to exist between social media interaction and parasocial behavior (Chung & Cho, 2017). Vloggers emerge as vlog celebrities or key opinion leaders who are active on social media, nowadays the media users can share their own thoughts with the celebrities and even comment the celebrities’ lives on Twitter, Facebook and Instagram freely, as if they have established a “friendship” with the celebrities (Chung & Cho, 2017), PSI is found to exist between vloggers and media users and is therefore fostered (Lee & Watkins, 2016). Attraction to a media persona results in enhancement of interaction or repeat viewing (Rubin & McHugh, 1987). If a person's physical appearance is considered to be aesthetically beautiful or pleasing, the degree of physical attractiveness is thus higher. Till and Busler (2000) suggest that physically attractive people are considered to possess more favorable personality traits such as intellectual competence, social competence and integrity. Both social and physical attractiveness to a media persona have been found to be predictors of PSI (Lee & Watkins, 2016; Perse & Rubin, 1989). This study thus postulates that: H1: The physical attractiveness of vlogger has a positive effect on PSI. Social attractiveness is referred to a media persona’s likability (McCroskey & McCain, 1974) and considering the media persona as a viable friend (Frederick et al., 2012). Media persona who is socially attractive leads to a stronger PSI, in both social and work context (Rubin & McHugh, 1987). Social attractiveness has been found to be a predictor of PSI (Lee & Watkins, 2016; Perse & Rubin, 1989). This study thus postulates that: H2: The social attractiveness of vlogger has a positive effect on PSI. According to Rubin and Step (2000), motivation is central to communication processes, and different motivations would lead to different behavior and communication choices. In the video sharing platform such as YouTube, YouTube users engage with YouTube for entertainment purposes (Haridakis & Hanson, 2009). Entertainment refers to any activities that provide diversions and amusements to fill time, gain pleasure, relax and have fun (Yuan et al., 2016). People not only watch vlogs for entertainment but are also widely influenced by the content of vlogs (Chung & Cho, 2017), as vloggers are viewed as more authentic and true-to-life (Lee & Watkins, 2016). This study postulates that: H3: Viewing motive with vlogger for entertainment has a positive effect on PSI. People use media not only for entertainment, but also for satisfying interpersonal needs (Armstrong & Rubin, 1989; Madianou & Miller, 2013; Rubin et al., 1985). As media user’s motivations for using media correlate with the development of PSI positively (Rubin et al., 1985) and the motivation of individuals to undertake relationship building by using social network service is found to be positivly correlated with parasocial behavior (Yuan et al., 2016), it is proposed that the more the media user’s motive to use social media involving vlog for relationship building, the stronger their PSI with vlogger. This study thus postulates that: H4: Viewing motive with vlogger for building relationship has a positive effect on PSI. More time spent with the medium encourages a participative and active culture, and higher online traffic implies more opportunities for online advertising and promotions (Hung et al., 2011). When media user is exposed with frequent messages enriched with personal information from a media persona, psychological familiarity and intimacy are enhanced, resulting in further development of friendship over time (Chung & Cho, 2017). This study thus postulates that: H5: The time spent with the medium has a positive effect on PSI. Mediating effect of PSI PSI explains the relationship between media user and media persona (Horton & Wohl, 1956) and is considered as a “friendship” with a media persona (Perse & Rubin, 1989). Previous study implicitly addresses the mediating role of PSI between the antecedents of PSI and brand perception (Lee & Watkins, 2016), however, the mediating role of PSI between the relationship of the antecedents of PSI and perceived brand quality, brand affect as well as brand preference has not been investigated. Specifically, PSI decreases uncertainty (Perse & Rubin, 1989) and consumer’s confidence has been shown to be a key component of forming positive perceived brand quality (Kayaman & Arasli, 2007). Moreover, social media strategies are often used to build positive brand attitude through enhanced consumer engagement and consumer likeability towards a brand, making brand affect metric relevant to social media marketers. Finally, Grimm (2005) suggests that attitude can predict preference and preference is influenced by emotional and personality responses to the brand. Feelings of bonding with brands are fostered by PSI, as a result positive brand attitude is enhanced (Knoll et al., 2015). Moreover, evidences show that celebrity endorsement can help to positively influence consumer’s brand preference (e.g. Kamins et al., 1989). Thus, it is predicted that PSI mediates the effects of the antecedents of PSI: physical attractiveness, social attractiveness, viewing motive for entertainment, view motive for building relationship and time spent with the medium on perceived brand quality, brand affect and brand preference, and has the following direct effects on perceived brand quality brand affect, and brand preference. H6: PSI has a positive effect on perceived brand quality H7: PSI has a positive effect on brand affect. H8: PSI has a positive effect on brand preference. H9: PSI mediates the relationship between antecedents of PSI and a) perceived brand quality; b) brand affect; and c) brand preference Methodology In this study, the measurements are adopted from well-established scales of previous literatures. Physical attractiveness was measured using a three-item scale based on McCroskey and McCain (1974), which has been applied by Lee and Watkins (2016). As homophily, or the belief that two parties share similar beliefs, is grounded in social attractiveness between the parties (Turner, 1993), attitude homophily, and social attractiveness are similar constructs. Based on the measurement scale from Lee and Watkins (2016), attitude homophily and social attractiveness were merged into one factor and was measured using a ten-item scale in this study. Viewing motive for entertainment and viewing motive for building relationships were measured using the motivation scale proposed by Yuan et al. (2016). Viewing motive for entertainment was measured using a seven-item scale while viewing motive for building relationships was measured using a six-item scale. Time spent with the medium was measured using a two-item scale from Hung et al. (2011), which assesses the average weekly frequency and the average weekly duration of browsing vlogs. Parasocial interaction was measured using an eight-item scale relating to vloggers from Lee and Watkins (2016). Perceived brand quality was measured using a six-item scale from Yoo et al. (2000). Brand affect was measured using a three-item scale from Chaudhuri and Holbrook (2001). Brand preference was defined as the relative preference for selecting and using a particular brand (Yoo et al., 2000), brand preference was measured using a four-item scale based on Yoo et al.’s (2000) overall brand equity scale which was adopted by Liu et al. (2014). Besides time spent with the medium, each item was assessed on a five-point Likert-type scale. The wording of each item was altered to better suit the context of using vloggers for social media marketing. Only female and those who have watched beauty vlog previously were qualified to participate in the survey. Respondents were shown a beauty product review video by the selected vlogger from YouTube, the brand name of the beauty product in the video was eliminated so as to prevent brand bias. In the online questionnaire, the qualified respondents were only allowed to start filling in the next part of the questionnaire after watching the whole video. Data for this study were collected via online survey to simulate the environment of vlogs and social media. Convenience sampling method was utilized in this study due to its non-probability sampling technique and convenience accessibility. The online questionnaires were distributed through social media platforms, including Facebook and WeChat etc. The data collection process was conducted from August to September of 2017 in Macau, a total of 756 samples were collected. After removing the incomplete and disqualified questionnaires, 401 questionnaires were identified as eligible for formal analysis. Pearson’s correlation test was employed to test the relationships between all variables. Multiple regressions with the ordinary-least-squares (OSL) estimation was used to test the relationship between antecedents of PSI and PSI (i.e. H1, H2, H3, H4, and H5), and the relationship between PSI and brand evaluations (i.e. H6, H7, H8). To investigate the mediating effect of PSI between each antecedent of PSI and perceived brand quality, brand affect, and brand preference (i.e. H9a, H9b, H9c), the PROCESS macro bootstrapping procedure (n = 5000, model 4; Preacher et al., 2007) was performed for each variable. Bootstrapping is a nonparametric resampling procedure for testing mediation that does not impose the assumption of normality of the sampling distribution (Preacher & Hayes, 2008). Moreover, a Sobel test was used to further demonstrate the significance of the mediation effect of PSI. Results Multiple regression analysis is performed to tests relationships between PSI and the antecedents of PSI. PSI as a dependent variable, the main effects of the antecedents of PSI on PSI are all significant (F (5, 395) = 87.25, p < 0.001). Specifically, physical attractiveness (β = 0.271, p < 0.001), attitude homophily/social attractiveness (β= 0.335, p < 0.001), viewing motive for entertainment (β = 0.194, p < 0.001), viewing motive for building relationship (β = 0.163, p < 0.001) and time spent with the medium (β = 0.062, p < 0.001) are positively related to PSI. Results support H1, H2, H3, H4, and H5. Moreover, results found (1) PSI fully mediates the effect of physical attractiveness (β = 0.052, p < 0.001) on perceived brand quality; PSI partially mediates the effects of attitude homophily/social attractiveness (β = 0.064, p < 0.001), viewing motive for entertainment (β = 0.037, p < 0.01), viewing motive for building relationship (β = 0.031, p < 0.01) as well as time spent with the medium (β = 0.012, p < 0.05) on perceived brand quality. (2) PSI mediates the effect of physical attractiveness (β = 0.079, p < 0.001), attitude homophily/social attractiveness (β = 0.098, p < 0.001) and time spent with the medium (β = 0.018, p < 0.05) on brand affect, while partially mediates the effects of viewing motive for entertainment (β = 0.057, p < 0.01), viewing motive for building relationship (β = 0.047, p < 0.01) on brand affect. (3) PSI mediates the effect of physical attractiveness (β = 0.110, p < 0.001), attitude homophily/social attractiveness (β = 0.136, p < 0.001), viewing motive for building relationship (β = 0.066, p < 0.001) and time spent with the medium (β = 0.025, p < 0.01) on brand preference. And PSI partially mediates the effects of viewing motive for entertainment (β = 0.079, p < 0.001) on brand preference. In this sense, H6, H7, and H8 are supported. Discussion The results of this study provide recommendations that customers’ perceived brand quality, brand affect and brand preference could be enhanced by social media marketing practices by using vlogger. Various antecedents of PSI have been proven effectively influencing PSI and the findings of this study consistently demonstrate that physical attractiveness, attitude homophily, social attractiveness, viewing motive for entertainment, viewing motive for building relationship as well as time spent with the medium are influential elements to build a stronger PSI, which are essential to foster the “friendship” between media user and vlogger. This study confirms the mediating role of PSI between the antecedents of PSI and the brand variables. Long-term relationships with consumers is a viable marketing strategy (Berry, 1995), and the overall result supports that PSI can be used as a brand management tool to establish connections with consumers. Establishing a relationship with consumers via online brand ambassadors could eventually enhance perceived brand quality, brand affect and brand preference, and may lead to increase of the likelihood of future purchases.

In this research, we explore the role of interpersonal personalization in brand offerings in engendering the representations of ‘which dimension’ of brand personality (Aaker, 1997) and the subsequent effect on consumer attitude toward and connection with the brand (Fournier, 1998). Experiment 1 reveals that interpersonal personalization is different from customization with unique benefit in developing sincerity in brand personality. It demonstrates the positive effect of personalization on brand attitude through formulation of a sincere brand. Experiment 2 provides empirical evidence that personalization encouraging consumer’s involvement in the product design process allows consumer’s greater engagement with and investment towards the brand, which then manifests favorable brand attitude. The findings of this research offer insights on how brands can take advantage of personalization practice in their product or service offerings to engage consumers, and subsequently develop a close relationship with them. This research makes an important contribution to the brand personality literature through identifying a specific marketing approach (i.e., interpersonal personalization) as an effective strategy in developing a specific type of brand personality (i.e., sincerity). In sum, this research offers new view on how to manage close relationship with consumers, which is a significant practical implication for marketing managers.

본 연구는 전문대생의 진로성숙이 직업선호에 미치는 영향에 관한 연구에서 회복탄력성의 매개효과를 연구하였다. 연구결과 다음과 같이 나타났다. 첫째, 진로성숙도는 직업선호도(r=.597), 회복탄력성(r=.581)과 정(+)적 상관관계(p<.01)가 있는 것으로 나타났다. 둘째, 진로성숙도가 직업선호도에 미치는 영향을 파악한 결과, 진로성숙도 중 결정성이 직업선호도에 미치는 영향에서 회복탄력성이 통계적으로 영향을 미치는 것으로 알 수 있다. 셋째, 진로성숙도 중 타협성이 직업선호도에 미치는 영향에서 회복탄력성이 통계적으로 영향을 미치는 것으로 알 수 있다. 즉 진로성숙에 따라 직업을 결정할 때 회복탄력성 중 대인관계능력이 타협성에 정(+)적으로 영향을 주는 것으로 나타났다. 따라서 대학에서 진로상담에서 회복탄력성을 고려하여 진로 및 상담을 하는 것이 중요하다는 것을 알 수 있다. 진로상담에서 단순히 직업선호도 검사만으로 진로를 결정하지 말고 직업을 잘 결정하지 못하는 학생들은 회복탄력성 검사를 통하여 진로를 결정하는 것이 중요하다고 볼 수 있다.

In the present study, we investigated the physiological effects of smartphone use at night when the display luminance and white balance were differently manipulated. Two levels of luminance and two types of white balance were combined to form four types of displays. Subjects were instructed to use smartphones between 23:00 to 01:00 twice a week for two weeks, and for each trial, subjects were given one of the four display types. Melatonin concentration in the saliva, body temperature and heart rate were measured before and after each experiment. The experimental result showed that the low luminance display supported melatonin secretion and thermoregulation compared to the high luminance display. With regard to the white balance, higher melatonin level was observed when using the display that filtered blue light. The low luminance display together with yellowish tint best supported restful sleep at night in terms of every physiological response. This study collectively demonstrates that bright and blue light emitted from smartphone displays adversely affect melatonin secretion, body temperature, and heart rate, and therefore, suggests the use of a display with low luminance or a display that filters blue light for a restful sleep at night.

The purpose of this study was to investigate the effect of estrus synchronization to altrenogest regumate (progesterone), PMSG/hCG, and artificial insemination (AI) on galectin-3, FGF-9 gene and protein expression. The morpho-metrical parameters of the endometrium and the number of corpora lutea (CL) were recorded. RNA was isolated from endometrial, oviduct and ovary tissues of non-synchronized (Control; n = 7) and AI synchronized (regumate, PMSG/hCG; n = 7) sows. The total number of CL was higher (P<0.05) in pigs treated with regumate/PMSG/hCG. The content of gelactin-3 and FGF-9 mRNA in pre-embryonic development stages increased on particular days, in control and studied in regumate/PMSG/hCG administered pigs. Gelactin-3 and FGF-9 were affected by regumate/PMSG/hCG treatment in the both pre-embryonic development stages (P<0.001, P<0.05) and encdometrial tissue (P<0.001, P<0.01). The regumate/PMSG/hCG treatment resulted in elevated expression of gelactin-3 (P<0.001) and FGF-9 (P<0.005) in oviduct and ovary tissues in comparison to control sows. Moreover, oviduct amount of gelectin-3 mRNA was higher in regumate/PMSG/hCG sows in comparison to the control group (P<0.05), whereas, expression characteristics of gelactin-3 and FGF-9 were investigated by hematoxylin and eosin stained and immunohistochemical staining. The results showed that galectin-3 and FGF-9 were significantly shown in the endometrium, oviduct and ovary tissues of the regumate/PMSG/ hCG. Presented data show that exogenous hormones administration can affect gene and protein expression in the sow reproductive tract.

There is a variety of mobile beauty application specialized services providing information, such as reports on the advantages and disadvantages of a product, as well as tips and recommendations, based on consumers' comments for products that demand much consultation on the part of the consumers to critique the products. From goods purchased through mobile shopping apps, beauty-related products come right after fashion/retail and food/health-related goods, while promotions, followed by review/comments, are known as influential factors when selecting mobile shopping apps. Consumer reviews about a product are seen as important instruments for obtaining a variety of information about a product for those consumers who have not yet used it. Moreover, there is an increasing interest in authentic information instead of purely advertised narrations, while studies are actively in progress to verify the effectiveness of consumer reviews according to their nature and direction. The results vary with each researcher and since online consumer reviews differ, there is a need to research dynamically blended reviews and the forms that they take. Accordingly, this study attempts to observe and identify the factors that affect the perceived authenticity of the information, brand attitude, purchase intention and electronic word-of-mouth (e-WOM). The sample consists of 110 respondents in their twenties and thirties who have purchased beauty products online. The respondents were given online and offline questionnaires, and the collected information was analyzed with SPSS 21.0 and AMOS 18.0 using factor analysis, reliability analysis, t-tests, structural equation modeling (SEM) and multi-group analysis. The results show that perceived information authenticity has a significant influence on brand attitude, purchase intention and e-WOM. Positive, negative and subjective evaluations have more significant impact on information authenticity than did only positive and negative reviews, while perceived authenticity has significant relevance to brand attitude, purchase intention and online word-of-mouth. The implications of these findings

This research aims to look at the contradictory effects of corporate social responsibility as conducted by luxury brands. On the one hand, corporate social responsibility (CSR) is known to product positive effects on brands such as the transfer of goodwill and image but on the other hand because of the purported impact of disfluency, previous research has argued that the emphasis on self enhancement runs counter to the more social agenda of CSR. In this study we examine of power and how that can mediate when positive and negative impact of CSR when such campaigns are implemented by luxury brands.

이 연구의 목적은 인터넷 포털 기업의 사회적 책임 영역에 대한 공중 평가가 해당 포털 사이트의 신뢰도, 선호도 및 충성도에 어떤 영향을 미치는지 살펴보는 것이다. 구체적으로 우리나라 상위 포털 기업인 <네이버>, <다음>, <네이트>가 수행하는 CSR에 대한 영역별 공중 평가가 해당 사이트의 신뢰도, 선호도, 및 충성도에 미치는 영향을 파악하고, 더불어 각 포털 사이트 신뢰도와 선호도가 해당 포털 사이트 충성도에 어떤 영향을 미치는지 검증하는 것이다. 이를 위해 대학생 258명을 설문조사하였다. 연구결과, 인터넷 포털 기업 CSR에 대한 영역별 공중 평가는 해당 사이트의 신뢰도, 선호도, 및 충성도에 유의미한 영향을 나타냈다. 특히, 인터넷 포털 기업의 CSR 영역별 평가 가운데, “법적 책임”과 “윤리적 책임” 영역 평가는 공통적으로 연구대상 포털 사이트 신뢰도에 유의미한 영향을 미치는 변인이었다. “경제적 책임” 영역 평가의 경우, 세 포털 사이트 선호도에 공통적으로 유의미한 영향을 나타냈다. 각 인터넷 포털 기업별로 <네이버>의 경우, 포털 사이트 신뢰도와 선호도 모두 포털 사이트 충성도에 유의미한 영향을 미친 반면에, <다음>과 <네이트>는 포털 사이트 선호도만이 포털 사이트 충성도에 영향을 미치는 것으로 나타났다.

이 연구의 목적은 인터넷 포털 기업의 사회적 책임 영역에 대한 공중 평가가 해당 포털 사이트의 신뢰도, 선호도 및 충성도에 어떤 영향을 미치는지 살펴보는 것이다. 구체적으로 우리나라 상위 포털 기업인 <네이버>, <다음>, <네이트>가 수행하는 CSR에 대한 영역별 공중 평가가 해당 사이트의 신뢰도, 선호도, 및 충성도에 미치는 영향을 파악하고, 더불어 각 포털 사이트 신뢰도와 선호도가 해당 포털 사이트 충성도에 어떤 영향을 미치는지 검증하는 것이다. 이를 위해 대학생 258명을 설문조사하였다. 연구결과, 인터넷 포털 기업 CSR에 대한 영역별 공중 평가는 해당 사이트의 신뢰도, 선호도, 및 충성도에 유의미한 영향을 나타냈다. 특히, 인터넷 포털 기업의 CSR 영역별 평가 가운데, “법적 책임”과 “윤리적 책임” 영역 평가는 공통적으로 연구대상 포털 사이트 신뢰도에 유의미한 영향을 미치는 변인이었다. “경제적 책임” 영역 평가의 경우, 세 포털 사이트 선호도에 공통적으로 유의미한 영향을 나타냈다. 각 인터넷 포털 기업별로 <네이버>의 경우, 포털 사이트 신뢰도와 선호도 모두 포털 사이트 충성도에 유의미한 영향을 미친 반면에, <다음>과 <네이트>는 포털 사이트 선호도만이 포털 사이트 충성도에 영향을 미치는 것으로 나타났다.

This study examines the general assumption that serious games can bring about positive effects for purported social changes. The interactive nature of the serious game was thought to be one of the distinctive aspects of the medium as compared with other traditional non- interactive media. To explore whether the interactivity of serious games yields different psychological influences, we conducted an experimental study with a serious game whose narrative concerns the environmental issue, EcoFriendz (N=40). The results illustrate that those who played the video game perceived themselves to be more aware of the environmental problem than those who read the same narrative in a non-interactive text format. Also the game players were more willing to carry out measures to deal with the environmental problem.

Emotion regulation has been suggested as a pathway through which personality traits (e.g., extraversion or neuroticism) affect psychological well-being. However, the pathway needs further investigation across cultures due to variations in parts of the relationship reported in recent culture research. With an aim of improving current understanding of the pathway, we investigated the role of emotion regulation mediating the link between personality traits and well-being across two college samples from different cultural backgrounds: Korea and the United States (US). Results of mediation analysis revealed that the extraversion—well-being relationship was fully mediated by the degree to which individuals regulate negative emotions in both Korean and US samples. However, the neuroticism— well-being relationship was partially mediated by emotion regulation in the US sample, while it was fully mediated in the Korean sample. The role of emotion regulation differently functioning across cultures suggests the importance of investigating cultural-specific mechanism of psychological processes.

Cathepsin B is abundantly expressed peptidase of the papain family in the lysosomes, and closely related to the cell degradation system such as apoptosis, necrosis and autophagy. Abnormal degradation of organelles often occurs due to release of cathepsin B into the cytoplasm. Many studies have been reported that relationship between cathepsin B and intracellular mechanisms in various cell types, but porcine embryos has not yet been reported. Therefore, this study evaluated the effect of cathepsin B inhibitor (E-64) on preimplantation developmental competence and quality of porcine embryos focusing on apoptosis and oxidative stress. The expression of cathepsin B mRNA in porcine em-bryos was gradually decreased in inverse proportion to E-64 concentration by using real-time RT-PCR. When putative zygotes were cultured with E-64 for 24 h, the rates of early cleavage and blastocyst development were decreased by increasing E-64 concentration. However, the rate of blastocyst development in 5 μM treated group was similar to the control. On the other hand, both the index of apoptotic and reactive oxygen species (ROS) of blastocysts were sig-nificantly decreased in the 5 μM E-64 treated group compared with control. We also examined the mRNA expression levels of apoptosis related genes in the blastocysts derived from 5 μM E-64 treated and non-treated groups. Expre-ssion of the pro-apoptotic Bax gene was shown to be decreased in the E-64 treated blastocyst group, whereas expre-ssion of the anti-apoptotic Bcl-xL gene was increased. Taken together, these results suggest that proper inhibition of cathepsin B at early development stage embryos improves the quality of blastocysts, which may be related to not only the apoptosis reduction but also the oxidative stress reduction in porcine embryos.

본 연구는 개인이 가지고 있는 정서지능 수준의 차이와 타인이 표현하는 정서가 가지는 목표관련성의 차이에 따라서 권력이 타인정서 인식능력에 미치는 영향력이 달라지는가를 알아보고자 하였다. 첫 번째 실험에서는 참가 자들의 정서지능을 측정한 후, 권력을 조작하여 사진 속 주인공의 정서를 판단하도록 하였다. 두 번째 실험에서는 사진 속 주인공의 정서가 가지고 있는 목표관련성을 조작 한 후, 실험 1과 동일하게 권력을 조작하고 정서판 단과제를 실시하였다. 실험 결과, 권력을 가진 집단은 기존의 연구 결과와 마찬가지로 권력을 갖지 못한 집단보다 타인의 정서에 대한 민감도가 떨어지는 것으로 나타났다. 한편 개인의 정서지능이 높은 경우에는 권력이 타인 정서 인식능력에 미치는 영향력이 작았으나 중간 정도의 정서지능을 가진 참가자들은 권력의 영향을 많이 받았다. 또한, 사진 속 정서의 목표관련성이 높은 집단에서는 권력을 가졌음에도 불구하고 비교적 높은 수준의 정서 판단의 정확도를 보였다. 또한, 능력으로써 정서지능의 역할을 확인하였고 권력을 가졌다 할지라도 타인의 정보에 대한 동기수준을 유연하게 조절할 수 있다는 점을 밝혔다는 점에서 이론적 공헌이 있다.

The purpose of the study was to investigate an effect of water temperature on a non-specific immune response and mortality of tilapia, Oreochromis niloticus, following a bacterial infection. Seventy five tilapia acclimated to 25℃ were then transferred at 16 and 36℃, and examined for non-specific immune responses over 12-96 h. Respiratory burst activity was reduced significantly in the group of fish cultured at 16 and 36℃ over 24-96 h, whereas phagocytic activity decreased significantly in the group of fish reared at a low temperature (16℃) over 12 and 24 h and high temperatures (36℃) over 12-96 h. Lysozyme activity diminished significantly in the group of fish transferred to 16℃ over 12-48 h, but increased significantly in the group of fish at 36℃ over 48 and 96 h. Alternative complement pathway (ACH50) decreased significantly when transferred to 16℃ after 12 h, but increased significantly when transferred to 36℃ after 24 h. In a challenging test, 30 tilapia reared at 25℃ were injected intraperitoneally with Streptococcus iniae at a dose of 2x107 cfu/fish, and then reared onward at water temperatures of 15, 25 (control), and 36℃. Over 12-96 h, the cumulative mortality of S. iniae-injected fish held in 16 and 36℃ was significantly higher than that of injected-fish held in 25℃ In conclusion, transfer of tilapia from 25℃ to low temperature (16℃) after 12 h, and transfer of fish from 25℃ to high temperature (35℃) reduced their immune capability. Furthermore, tilapia under temperature stress at 16 and 36℃ from 25℃ decreased its resistance against S. iniae