This study explored the impact of commitment tactics and individual differences in personality on change-agent participation in a peer-to-peer intervention. The intervention involved approaching bicyclists on campus, discussing the importance of helmet use, and rewarding them with a coupon for a discounted helmet if they signed a promise to wear one. Change-agent volunteers (n = 82) were trained in one of three commitment conditions to explore their relative impact on approaching a set number of bicyclists. Specifically, change-agents were asked to commit to a personal goal of number of targets they would approach in private, in public to a small group of people, or in public to a large group of people. In addition, change-agents completed measures of the "Big Five" personality traits and susceptibility to social influence tactics to explore their potential influence on intervention performance variables. No statistically significant differences were found in goal attainment between the commitment conditions. However, 10% more of the change-agents making a public, group commitment met their goal when compared to those who made an individual, private commitment. No significant relation was found between the Big Five personality traits and the number of bicyclist targets approached. However, the Big Five predicted 19% of the variance in the rate of obtaining signed promise cards from bicyclists. Of the susceptibility to social influence variables, only the Ingratiation score was shown to be useful for predicting change-agent effort, accounting for 18% of the variance in the number of targets approached. The peer-to-peer intervention was not successful in increasing bicycle helmet use on campus. Limitations of the intervention in comparison to a successful helmet program are discussed. / Ph. D.

This research studied the efficacy of enhancing information-based appeals with social influence strategies in order to encourage environmental activism and efficiency behaviors in response to global warming. A secondary goal was to study the relationship between pro-environment attitudes as measured by the New Ecological Paradigm (NEP) and the activism/efficiency behaviors. After hearing a 15-minute presentation about the threat of global warming, 270 participants were encouraged to take relevant action by (a) signing web-based petitions asking automakers to build more environmentally friendly cars, (b) sending web-based letters to their state senators asking them to pass legislation to curb global warming, and (c) replacing their own inefficient incandescent light bulbs with compact fluorescent light bulbs (CFLs). The primary independent variable was the intervention technique used to encourage the three behaviors. The Information Only condition received a standard informational presentation, and a Social Influence condition received a presentation enhanced by the social psychological principles of authority, social validation, and consistency. A third group—Social Influence and Commitment—received the social influence manipulations and also signed a commitment statement. Overall compliance was relatively low, with 30.7% of participants across all conditions completing one or more activism/efficiency behavior. Statistical comparisons of the compliance rates of the three groups were insignificant, and thus failed to support the efficacy of the social influence approach. Participants who held stronger pro-environment attitudes were more likely to complete the tasks. Those who completed at least one of the environmental actions scored significantly higher on a pre-presentation NEP (m = 54.9) than those who completed none (m = 50.3). In addition, political conservatism was negatively related to the NEP and task compliance. Finally, individuals who completed at least one of the requested behaviors showed a significant increase in pro-environment attitude on a second (post intervention) NEP, while the NEP scores of non-compliers remained unchanged. / Ph. D.

The Bass model has been used extensively and globally to forecast the first purchases of new products. It has been named by INFORMS as one of the top 10 most influential papers published in the 50-year history of Management Science. Most models for the diffusion of innovation are deeply rooted in the work of Bass (1969). His work provides a framework to model the underlying process of innovation adaption among first-time customers. Potential customers may be connected to one another in some sort of network. Prior research has shown that the structure of a network affects adoption patterns (Dover et al. 2012; Hill et al. 2006; Katona and Sarvary 2008; Katona et al. 2011; Newman et al. 2006; Shaikh et al. 2010; Van den Bulte and Joshi 2007). One approach to addressing this issue is to incorporate network information into the original Bass model. The focus of this study is to explore how to incorporate network information and other micro-level data into the Bass model. First, I prove that the Bass Model assumes all potential customers are linked to all other customers. Through simulations of individual adoptions and connections among individuals using a Random Network , I show that the estimate of q in the Bass Model is biased downward in the original Bass model. I find that biases in the Bass Model depend on the structure of the network. I relax the assumption of the fully connected network by proposing a Network-Based Bass model (NBB), which incorporates the network structure into the traditional Bass model. Using the proposed model (NBB), I am able to recover the true parameters. To test the generalizability and to enhance the applicability of my NBB model, I tested my NBB model on the various network types with sampled data from the population network. I showed that my NBB model is robust across different types of networks, and it is efficient in terms of sample size. With a small fraction of data from the population, it accurately recovered the true parameters. Therefore, the NBB model can be used when we do not have complete network information. The last essay is the first attempt to incorporate heterogeneous peer influence into the NBB model, based on individuals' preference structures. Besides the significant extension of the NBB (Bass) Model, incorporating high-quality data on individual behavior into the model leads to new findings on individuals' adoption behaviors, and thus expands our knowledge of the diffusion process.

This dissertation analyzed customers’ intention to repurchase a smartphone based on an analysis of previous research. In particular, this study examined whether social influence directly affects the intention to repurchase, whether positive and negative social influence have differential effects on intention to repurchase, and the effects of habit on intention to repurchase and their role as a mediator. The study focused on two customer groups, customers who bought a smartphone of the same brand as their current smartphones, and customers who bought a different brand of smartphone. Previous studies have suggested that customer satisfaction leads to brand loyalty, which, in turn, leads to repurchase. However, this paper looks at customers’ intentions to repurchase by considering social influence, customer satisfaction, emotion loyalty, and the moderating effects of customer habit. In addition, statistical analysis was conducted to investigate customers' intention to repurchase and their causal relationships. Customer satisfaction and emotional loyalty were studied as mediators. The results showed that for both customer groups, positive social influence affects customer satisfaction, and customer satisfaction affects 'intention to repurchase'. This paper also found that customer habit moderates the relationships among customer satisfaction, emotional loyalty, and intention to repurchase (the latter in the customer group who repurchased the same brand smartphone). The customer group who repurchased the same brand smartphone showed that positive social influence affected customer satisfaction and emotional loyalty. Additionally, both customer satisfaction and emotional loyalty had positive effects on intention to repurchase. In addition, customer habit had a positive effect on intention to repurchase, and habit moderated the relationship between customer satisfaction and emotional loyalty and intent to repurchase (the customer group who repurchased the same brand smartphone). These results suggest that companies should strengthen their customer loyalty programs and subscription business strategically to induce customers to repurchase. If customer satisfaction and emotional loyalty have mediating effects, then companies should establish differentiated marketing strategies considering customer satisfaction and emotional loyalty. Customers' habits should be strategically utilized to induce them to continuously use the same brand of products. Customer repurchases are based on a satisfactory experience of customers' consumption behavior. However, the results of this study show that customer habits also play a role in moderating customer satisfaction in a negative direction. In other words, habit can be an important factor in inducing customers to repurchase smartphones unconsciously, rather than making reasonable decisions. / Business Administration/Management Information Systems

Power issues in the relationship between service users and clinical psychologists have received little attention from a postmodern perspective. The recovery approach and the scientist-practitioner model as recommended in best practice guidelines creates an argument for investigating power dynamics in academic and practical disseminations. This study aimed to investigate the social construction of service users and clinical psychologists in articles. Twelve articles and opinion pieces written by clinical psychologists and service users were sampled from publications of the Clinical Psychology Forum. A Foucauldian Discourse Analytic method was used to identify dominant discourses and counter-discourses. The discourses were linked to the power dynamics in play between relevant institutions. The analysis identified an economic discourse, a technical-rational discourse and an expert discourse as constructing service users and clinical psychologists. Clinical psychologists were found to have more discourse availability than service users, and in a position to make choices, whereas service users were found to have availability to a limited number of discourses with fewer options of subjectivity. A need for clinical psychologists to make conscious choices in practice was implied.

Popular messages not only illuminate many of the struggles people experience wrestling with the tensions between work and home life, but these popular texts also influence the behaviors of those who consume them. They not only reflect organizational members' experiences, but they also shape what they do. The following dissertation provides a theoretical discussion that conceptualizes and locates popular messages within dominant cultural patterns and explores the role of popular discourse in socializing organizational members. Next, "work-life" research is understood in terms of enactments and construals of time. This discussion not only develops a temporal perspective for "work-life" research, but also highlights inequalities embedded in the current "work-life" research. A narrative approach is offered as a theoretical perspective and methodological tool for uncovering perspectives. Sixty-seven participants are interviewed, and findings suggest differing perspectives on work-life balance, work-life expectations, and the role popular messages play in shaping work-life expectations vary along gender, socioeconomic, and generational lines. Further, analyses of interview data reveal gender and socioeconomic inequalities exist within the "work-life" construct and differing construals of time. / text

The legend is a permanent fixture of human societies. Though the legends themselves are permanent, their functions and meanings can fluctuate as the context in which they are told and retold shifts. As societies move through history, certain authoritative institutions create narratives that direct those societies and frame debates within them. Issues neglected by these institutions yet experienced by members of the population can be said to be unconstructed. Social problems that have achieved some level of construction inevitably provoke those who dissent from those constructions. In these situations, members of a society look for alternative means for talking about these problems. Often they turn to the contemporary legend for this purpose. This study reviews a sample of the most popular legends in the early part of 2012 to determine the ways members of American society were dealing with the unconstructed social problems of that time.

In this study, equity theory and relationship maintenance were employed as the framework through which couples' perceptions of and use of diet- and exercise- related social influence strategies were examined. Additionally, this research investigated whether people's perceptions of social influence were associated with their health maintenance behaviors and relationship quality, as well as whether their perceived diet- and exercise-related support from the partner moderated these associations. Finally, individuals' motivation to use influence strategies to encourage their partners to be healthier was also be evaluated. This study included a sample of 192 cohabiting or married couples. The results of the Actor Partner Interdependence Models indicated that actors' perceived relationship maintenance and control mutuality were positively associated with their perceptions of positive influence strategies from the partner. Additionally, actors' perceived positive influence strategies from their partners were associated with greater health maintenance and relationship satisfaction, with the inverse being true for actors' perceived negative influence strategies from their partners. Individuals' reports of using social influence strategies varied depending on their various motivations for using social influence strategies (i.e., perceived partner ability and willingness to change, reasons for using social influence, and reasons for not using social influence). Finally, individuals reported engaging in more health maintenance behaviors when they also perceived more positive social influence and more diet- and exercise-related support from their partners. These results suggest that relationship functioning is related to individuals' perceptions of influence strategies from the partner, which are also associated with individuals' health maintenance behaviors and relationship quality. Consequently, romantic relationships appear to be an important context in which to examine diet- and exercise- related social influence strategies.

The underlying theme that draws together all the chapters presented in this thesis is that surveillance, like any feature of our social world, is not imposed in a vacuum; and that information pertaining to the origin and purpose of surveillance is vital in determining how it will be perceived and evaluated (and how it will then impact on behaviour). The key aims of this thesis are, first, to demonstrate how a social identity approach can account for varying reactions to surveillance originating from different sources; second, to investigate how various contextual features exert their impact, resulting in the disparate perceptions of surveillance that exist in our society; and finally, to demonstrate how the imposition of surveillance can itself impact on the broader social context, including the relationship that is understood to exist between those watching and those being watched. These aims are broken down into ten research questions that are addressed in seven chapters. Chapter 1 reviews the literature on perceptions of surveillance and that on social identity, and attempts to illustrate how they may be theoretically combined, resulting in the advancement of both fields. In Chapter 2, we present two studies which demonstrate a negative relationship between shared identity and the perception of surveillance as an invasion of privacy. This relationship was mediated by perceptions that the purpose of surveillance was to ensure safety. In Chapter 3, two studies demonstrate how level of surveillance moderates followers’ responses to leaders with whom they either share identity, or not. Imposing high surveillance where identity was shared with a leader undermined perceptions of the leader as a team member and affected willingness to work for the group, reducing levels to that of leaders without a shared identity. Chapter 4 presents a study that aimed to investigate the role of social identity and surveillance in affecting both discretionary behaviour and task performance. High surveillance led to higher productivity on a task, but this was associated with lower quality of work. Additionally, when identity was shared with the person in charge, helping this person was detrimentally affected by high, as opposed to low, surveillance; whereas no such differences were found where identity was not shared. Chapter 5 presents two studies which showed that framing surveillance as targeting the in-group led to outcomes such as increased privacy invasion, lower acceptability of surveillance, and reduced levels of trust in the implementers of surveillance, as compared to when surveillance was framed as targeting an out-group. However, a third study failed to replicate these results. In Chapter 6, we address how level of threat in the environment can affect evaluations of surveillance. Two studies showed that high levels of threat led to surveillance being seen as less privacy-invading, more necessary, and as having a safety purpose. Finally, in Chapter 7, we review and integrate our findings, discuss the limitations of the research, and consider the implications it has, both theoretically and practically. We conclude that, overall, the findings presented in this thesis support the notion that the source of surveillance and the perceived purpose for it are integral to the perception and interpretation of the surveillance.

Background: Alcohol has become ubiquitous in Swedish lifestyle blogs, as alcohol can be present in one third or one fifth of blog posts in some of Sweden’s biggest lifestyle blogs. Research suggests that exposure to media and commercial communications on alcohol increases consumption and that users and user-generated content related to alcohol and drinking may intensify social norms around alcohol consumption. This means Swedish lifestyle bloggers may be exposing alcohol and creating social normative influence that can affect blog readers’ intention to consume alcohol. Purpose: The purpose of this thesis was to explore if and how the presence of alcoholic beverages on Swedish blogs may affect young females’ intention to pursue alcohol consumption. Firstly, the study looks at to what extent and how alcoholic beverages and alcohol-related activities appear on Swedish lifestyle blogs. Secondly, the study explores if the presence of alcohol in blogs is recognised by blog readers and if they perceive this to affect their own and others' intention to consume alcohol. Method: This thesis has two different data collections to fulfil the purpose of the study. First a web content analysis is conducted on eight Swedish blogs to explore the presence of alcohol. Thereafter semi-structured interviews are conducted with nine respondents. The findings are compared to previous findings and analysed from theories on behavioural change. Conclusion: Alcohol and alcohol-related activities are depicted frequently in some of Sweden’s biggest lifestyle blogs when variation between blogs and monthly variance per blog are considered. Alcohol is put in a favourable setting through a positive or a commercial context. Blog readers perceive blog posts to contain positive alcohol content, and claim others may be affected to consume alcohol by these as bloggers have influence empowered by their social status. A majority of respondents claim they themselves are not affected by blog posts with alcohol. It is suggested this is because subjective attitude towards alcohol and a belief of personal control has stronger impact on intention to pursue alcohol-related activities. Another suggestion is that more salient and ready accessible referents such as parents, family and friends are deemed more important in affecting norms around alcohol through individuals’ perceived view of these referents’ desires and actions.