This thesis was constructed on the foundation of two broad theoretical criticisms levelled against Bandura’s (1986) social cognitive theory. The first was the lack of clarity about what constituted the building blocks of the theory and the second was the lack of clarity about how these constituent components interacted in consistent and predictable ways as an integrated model of human behaviour. These ‘theory-level’ criticisms, which detracted from the empirical testability of social cognitive theory, seemed to have filtered down to the level of its individual building blocks. Therefore, moral disengagement, which constituted the focal variable of interest in this investigation, was not unaffected by them. Bandura’s (1986) theoretical presentation of moral disengagement as either an eight or four-dimensional construct and the empirical treatments of moral disengagement by Bandura and his colleagues as a uni-dimensional (Bandura, Barbaranelli, Caprara & Pastorelli, 1996a; Bandura, Caprara, Barbaranelli, Pastorelli & Regalia, 2001b) and a four-dimensional variable (McAlister, Bandura & Owen, 2006), raised questions about its dimensionality. The first objective of this study was to examine moral disengagement’s dimensionality and the stability of its internal factor structure (i.e. longitudinal measurement invariance) over time. The general lack of clarity about how the constituent components of social cognitive theory were expected to cohere as an integrated framework of human behaviour had specific implications for the moral disengagement construct and its temporal position relative to other social cognitive variables. The second objective of this study was to examine moral disengagement’s temporal sequences relative to select social cognitive constructs (viz. proficiency-based self-efficacy, intention, and past and future behaviour) in order to comment on the likely temporal positions of these constructs relative to each other in the context of a model for predicting antisocial behaviour. Due to the exclusive activation of moral disengagement in antisocial contexts, the examination of its dimensionality and temporal sequences was contingent on an antisocial context. Software piracy, as a specific instance of antisocial behaviour, served as the context in which moral disengagement was researched in this study. A pilot investigation was conducted to test the psychometric properties of the scales that were developed to measure moral disengagement, proficiency-based self-efficacy, intention and behaviour in this study. Once their psychometric robustness was established, these scales were used in the context of a main longitudinal investigation separated by a three to four month time-lag in order to achieve the two main research objectives. Using the structural equation modelling family of data analysis techniques (specifically, confirmatory factor analysis and path analysis), the results of the main longitudinal study revealed that moral disengagement emerged as most meaningful as a uni-dimensional construct which consisted of four aggregated sets of items which represented the clusters of moral disengagement mechanisms that were likely to be activated at the four points in the self-regulation process envisaged by Bandura (1986). The findings suggested that this factor structure was longitudinally invariant when moral disengagement was measured across two assessment waves. Moral disengagement appeared to temporally precede intention and future behaviour and to temporally follow past behaviour. Self-efficacy, however, seemed to temporally precede future behaviour and to temporally follow past behaviour but unlike moral disengagement, self-efficacy appeared to temporally follow intention. Therefore, intention appeared to completely mediate the interaction between moral disengagement and proficiency-based self-efficacy in this study. The theoretical and practical implications of these findings were examined and directions for future research were proposed.

With the expansion of online communities, extant research in multiple disciplines has attempted to investigate its adoption and use among individuals. However, the biggest challenge encountered by managers of these communities is supplying knowledge, particularly, the willingness to share knowledge among the members. It is extremely important to maintain committed members in terms of active participation. Yet their level of participation might vary based on some social, behavioral and environmental factors that eventually affect their intentions on whether to participate actively or not, in fact some users choose to discontinue participating totally in the community. Cancers figure among the leading causes of morbidity and mortality worldwide, with approximately 14 million new cases and 8.2 million cancer related deaths in 2012. The number of new cases is expected to rise by about 70% over the next 2 decades. Among men, the 5 most common sites of cancer diagnosed in 2012 were lung, prostate, colorectal, stomach, and liver cancer. According to the world cancer report, among women the 5 most common sites diagnosed were breast, colorectal, lung, cervix, and stomach cancer. For this reason, there is an ever-increasing need to establish communities to offer empathic support to patients. Though peer support groups have been known to offer adequate support to patients with cancer and are considered to be an important complement to the formal health care system, however, practical barriers such as time, mobility and geography limit their use, this is where the online communities serve an advantage, as they have the potential to overcome barriers posed by regular offline communities. To achieve its objectives, this study mainly adopts the Social cognitive theory and two components of the social influence theory. According to the SCT, user behaviour is influenced by two factors: personal cognition and environment. Social influence model postulates that individual behaviour in a community can be affected by the social environment and three factors constitute this, they are compliance, identification and internalization. The study aims to provide insights on how and why patients diagnosed with cancer (and their relatives) seek social support using the Internet and social media. In particular, we seek to understand the motivation for joining these groups and the values derived from the community for the users both active and non-active.

African American women's HIV incidence rates are disproportionately higher than other population groups in the United States. Social cognitive theory concepts were used to perform a quantitative content analysis of the magazines Essence, Ebony, and Jet, which are sources of health information and vicarious learning, to evaluate the quality of the HIV/AIDS prevention messages for 2000 to 2006. The data reveal some positive reflection of health messages, but many articles focus more on dramatic risk factors and less on providing useful information and proposed behaviors for African American women. Environmental risks and gender-specific risks are not emphasized. The public health community should use the media messages that are already present to build a media advocacy campaign that provides more comprehensive information and bring about social change.

Osteoporosis (OP) is a disease characterized by low bone mass and structural breakdown of the skeleton. The disease may be prevented through weight-bearing, moderate to vigorous physical activity (MVPA), which is important for peri- and postmenopausal women who are at great risk for OP. However, most women do not participate in activity according to guidelines, which can negatively impact bone health. A better understanding of multidimensional factors that influence MVPA may help inform physical activity interventions aiming for OP prevention. The purpose of this study was to utilize social cognitive theory (SCT) to understand the associations between social cognitive factors and MVPA among peri- and postmenopausal women. Eighty-seven peri- and postmenopausal women (aged 43 to 65) completed this study. Participants completed demographic, health, calcium, and SCT questionnaires. SCT variables assessed included task self-efficacy (SET) and barrier self-efficacy (SEB), perceived social support from friends (SSFR) and family (SSFA), and perceived access to facilities (ACF) and home equipment (ACH). Participants wore an NL-1000 pedometer for one week to assess total steps per day and minutes spent in MVPA. Past year MVPA, past week leisure MVPA, and past week occupational/ transport MVPA were assessed with the Modifiable Activity Questionnaire. Stepwise regression analysis was used to identify the direct relationships between cognitive variables and each of the physical activity outcome measures. Moderation-mediation analysis was conducted to determine if significant interaction effects or confounding effects existed between social cognitive variables and each physical activity variable. Age, income, BMI, and highest level of education were controlled for in all analyses. Results showed significant relationships between social cognitive factors and each physical activity outcome, supporting the use of such variables for understanding physical activity behavior in peri- and postmenopausal women. For steps per day and MVPA minutes per day, 32% and 26% of the variance in activity was explained. For past year MVPA, past week leisure MVPA, and occupational/ transport MVPA, 39%, 26%, and 27% of the variance in activity was explained, respectively. The combination of variables entering the models was different for each physical activity outcome, but overall, SEB consistently emerged as the most prominent factor. Moderation analyses revealed a three way interaction effect between SEB, SSFR, and ACF for steps per day, and two-way interaction effects between SEB and SSFR for past year MVPA and past week leisure MVPA. Mediation analysis indicated SSFA confounded the relationship between SEB and past year MVPA. Results of this study indicate social cognitive factors are directly and indirectly associated with total and MVPA in peri- and postmenopausal women. These relationships should be considered when aiming to develop physical activity intervention programs for prevention of OP in peri- and postmenopausal populations.

This qualitative grounded study explores the potential relationship between wildlife TV viewing and human-animal interactions for exotic pet owners. The method involved 13 in-depth interviews and a qualifying open-ended questionnaire with 37 individuals. The interviews gathered viewers' interpretations of two different human-wildlife interactions on TV and served as a launching point for discussion. Findings supported the literature in that wildlife TV was an important source of information, emotion, and contradictory messages. Themes also emerged regarding participants' characterizations of their relationships with their pets. Drawing from social cognitive theory, this thesis suggests the following potential motivators for participants to model animal interactions as seen on screen: 1) visual instruction that increases viewer efficacy; 2) identification with the spokesperson; and 3) emotional connection to the animal. The study concludes with preliminary recommendations for wildlife programming on TV.

Despite the Centers for Disease Control and Prevention recommendations to test patients ages 13 to 64 years for HIV at health care settings, routine HIV testing is lacking. As a result, many people are unaware of their HIV seropositive status. The purpose of this quantitative cross-sectional study was to examine relationships between HIV testing and provider type, knowledge, attitudes, and behaviors regarding HIV testing in the acute care setting. The study was informed by social cognitive theory. Using a convenient sampling method, a questionnaire derived from previous surveys (Society of General Internal Medicine and University of Washington) was sent to 600 eligible acute care providers from a suburban Chicago hospital who treated HIV-negative patients ages 13 to 64 years. Completed surveys were received from 88 participants. Chi-square and multiple logistic regression testing showed no significant relationships between HIV testing and provider type (p = .09), age (p = .91), gender (p = .84), experience (p = 1), and race/ethnicity. However, knowledge of HIV testing regulations and positive attitudes about HIV testing were significantly associated with the likelihood of offering an HIV test (p = .026, p = .004 respectively). Results have some clinical importance, but also indicated a lack of routine opt-out HIV testing. Results may be used to promote HIV testing among acute care providers which could reduce HIV-status unawareness in the population.

In a Department of Veterans Affairs hospital on the East Coast of the United States, behavioral outbursts result in 2 out of 10 veterans dismissed from a posttraumatic stress disorder (PTSD) unit prior to completing the 6-week program. The purpose of this evidence-based quality improvement project was to create a clinical practice guideline (CPG) based on social cognitive theory (SCT) to provide new strategies for managing veterans with PTSD and to improve the confidence of the nurses in managing outbursts. The Star Model guided the project development with the Delphi method to achieve participant consensus, the AGREE II to assess the CPG quality, and the Generalized Self-Efficacy (GSE) scale to measure the change in participant knowledge and confidence. The literature was searched, compiled, assessed, and shared with 10 participants, registered nurses on the PTSD unit. Through the Delphi process, the participants achieved consensus (8/10) for the CPG, with two neutral participants. The GSE was administered pre- and post-test and analyzed using a paired t test to measure the mean differences of the GSE scores. The data was normally distributed to different scores to gauge the impact of the CPG development process on improving nursing knowledge and confidence was normally distributed [t(9) = -4.188, p < 0.05, &, t(9) = -2.714, p =0.003]. The data indicated a significant increase in participant knowledge about role of SCT, and confidence toward implementing the CPG into clinical practice. This project contributes to positive social change as nurses identified a clinical practice problem, transferred evidence about strategies from the literature into their clinical practice through a CPG, and implemented the CPG with the knowledge and confidence to impact patient care.

Human Immunodeficiency Virus and Acquired Immune Deficiency Syndrome (HIV/AIDS) is a national priority for several reasons including its endemic/pandemic status and economic demand. Adolescents 15 to 24 years old who are sexually active acquire nearly half of all new Sexually Transmitted Infections (STIs). Recent findings from the Centers of Disease Control (CDC) have documented increased teen birth rates, escalating births to unwed mothers, and STIs ascribed to one in four adolescent females, are reasons to enhance effective prevention efforts. The specific aim of the study, based on Bandura's social cognitive theory, was to test associations among communication system methods and HIV/AIDS self-efficacy, perceived risk, knowledge, and sexual decision-making among older adolescent females. Communication systems consist of interpersonal relationships, mass and print media. Research questions are: (1) What are the associations among demographic variables (age, race/ethnicity, education, socioeconomic status) in young women and the types of communication systems preferred (media and interpersonal)? (2) What are the associations among the types of communication systems preferred by young women and person factors (HIV/AIDS self-efficacy, perceived risk, and knowledge)? (3) What are the associations among the types of communication systems preferred by young women (media, print, interpersonal) and behavior (sexual-decision making)? (4) What are the associations among young women's person factors (HIV/AIDS self-efficacy, perceived risk, knowledge) and behaviors (sexual decision-making)? The study used a non-experimental cross sectional design. The sample included 866 females, 18 to 21 years old, attending the the second largest public university or a historically black university in Florida. Data was collected using validated instruments transcribed into an electronic survey program. Data analysis consisted of frequency distributions, descriptive statistics, and Multiple Regression Analysis. Results indicated that there were associations beween all proposed constructs that constitute the theoretically derived conceptional model. Interpersonal relationships explained the most variance (parents--22%; partners-12%) when associated with other communication systems. Overall, students reported that parents had more influence on their decisions with regards to basic beliefs, value systems, sexuality, dating, and alcohol use. The communication systems associated with older adolescents' sexual decision-making may assist public health advocates in developing related preventive interventions for young adult females.

This thesis develops the Effects of Power Model to explain why some power users come to behave in anti-social ways and what can be done about it. The model shares an analytical focus on the effect of the exercise of power on the power user with the Metamorphic Model of Power (Kipnis, 1976), but overcomes limitations in the Metamorphic Model by using the integrating framework of Social Cognitive Theory (Bandura, 1986). This theory guided the identification of the Effects of Power Model's main variables and their relationships, and provides a powerful framework for designing normative applications based on those variables and relationships. The Effects of Power Model describes a self-regulatory process which begins with a consideration by the power user of whether and what type of power or influence tactic he or she should use. To make the decision, the power user considers both internal standards and experiences (either vicariously gained or directly). Having acted, the power user then evaluates his or her action against both feedback and internal standards. If evaluation indicates that the action was contrary to either internal standards and/or to expected outcomes, there are two possible reactions. One is to feel bad and to plan to choose another course of action in future. The other is to rationalise the action through the use of disengagement mechanisms. The latter enables the power user to excuse his or her action and maintain a commitment to the action in the future. Over time, repeated use of disengagement mechanisms to excuse behaviour leads to a change in internal standards and to a rising commitment to the behaviour. The model's descriptive power is tested using a two-stage laboratory experiment with between subject manipulations and random allocation of subjects. A range of analytical frameworks are used to test the data including correlation, regression and Chi square analyses. Results strongly support the model. The model's prescriptive power is also considered by developing a program to enhance pro-social behaviour among power users, particularly professionals. Examples are identified that support key propositions of the model, relating to how the circumstances of professionals may influence their anti-social behaviour and how changes in circumstances could promote pro-social behaviour.

Introduction: Several national trials have demonstrated the efficacy of lifestyle interventions on decreasing the incidence of type 2 diabetes in adults with prediabetes. Behavior change pertaining to physical activity (PA) and diet were central to these lifestyle interventions; however it is likely a majority of adults with prediabetes are not currently meeting public health guidelines for PA and dietary intake. Little information is available on different influences of behavior central to prediabetes treatment. Given these findings, further investigation into potential influences on the efficacy of prediabetes service provision is warranted. Purpose: This dissertation aimed to explore prediabetes service provision to identify potential influences on PA and dietary intake in adults with prediabetes. Methods: The first study used Grounded Theory methodology to obtain opinions on necessary components of an optimal diabetes prevention program from health professionals (n=20) and adults with, or at high risk of, prediabetes (n=12). The second, third, and fourth studies involved individuals with prediabetes (N=232) in Northern Alberta, Canada. Participants completed a mailed survey assessing various demographic, health and behavior influences in August-September, 2008. Results: Data from Study 1 identified four influences on behavior change in adults with prediabetes: service provision, knowledge or confusion, motivational influences, and goal-setting. Potential strategies to increase effectiveness of prediabetes programs were also identified. In Study 2, individuals with prediabetes achieving PA guidelines (38%) reported higher physical and mental health-related quality of life compared to those not meeting PA guidelines. In Study 3, a number of preferences for PA and PA programming were identified. Activity status, health, and demographic variables all demonstrated significant influence on different PA preference variables. In Study 4, behavior-specific social cognitive theory constructs including self-efficacy, outcome expectations, and goal formation demonstrated significant associations with each other and PA, fat, and fibre intake. Conclusions: Evidence suggests it is possible to prevent or delay the progression of prediabetes to diabetes with small changes in body weight, physical activity and dietary intake. The results reported in this dissertation identified a number of factors that may influence potential success of a prediabetes program to promote behavior change and increase the public health impact of prediabetes prevention programs.