Individuals experience risk ubiquitously, but measuring risk taking is difficult. The balloon analogue risk task (BART) was developed in order to assess risk taking through having subjects press a key that accrues reward but also risk losing all reward with each press. In humans, greater responding in this task is associated with other maladaptive risk taking behaviors. The present research modeled this relationship in pigeons due to their previously shown propensity towards risk taking behavior. Experiment 1 used an unsignaled balloon task in which losing could only occur after 5 pecks. Results showed below optimal performance with greater pecks associated with faster acquisition of risk taking in the suboptimal choice task and evidence of modulation by delay discounting measures. Experiment 2 signaled the number of pecks with colors and tested multiple hoppers as a reinforcement modality to increase performance. Results showed only signaling the number of pecks improved performance and was related to performance in the high risk BART task. Both the low and high risk variants were associated with slower suboptimal choice acquisition and again had evidence of modulation by delay discounting measures. Potential shared underlying mechanisms are discussed.

The current study examined the protective effect of parenting-adolescent communication about sex on four risky sexual behaviors (age of onset of sex, number of sex partners, condom use, and STDs) among youth, framed by the Theory of Planned Behavior. It also tested for potential mediation effects between parent-adolescent communication and risky sex measures by sexual cues, date rape attitudes, and acceptance of dating violence in a sample of 2,245 college students from Japan, Slovenia, Spain, and the United States. Results provided evidence of a weak effect of parent-adolescent communication about sex on risky sexual behaviors across samples. A number of cultural influences were also found in the effects by mediators: sexual cues predicted risky sexual behaviors only in the Japanese sample; date rape attitudes was a predictor in the American and Slovenian samples; acceptance of dating violence predicted more risky sexual behaviors only in the American sample; and no significant effects were found in the Spanish sample. Several competing explanations were examined in the discussion to better understand the complex and dynamic interaction between parents and their adolescents as well as the role of culture. More studies are needed to better understand the associations between parent-adolescent communication about sex and risky sexual behaviors.

Instagram’s photo-centric social networking model has been found to provide a source of significant social influence on users’ behaviors offline, with such effects being especially prominent amongst adolescents given their position in the midst of a critical neurological/psychological development period. This study aims to use an online self-report questionnaire measuring susceptibility to negative social comparison and likelihood to engage in prosocial behavior as well as a 2x2x2 analysis of covariance to examine the effects of viewing risky stimuli, social desirability, and age (young vs older adolescence) to determine why certain adolescents are more prone to engaging in risky behaviors (defined as smoking cigarettes, drinking alcohol, and using cannabis) than their peers. The researcher proposes those with high susceptibility to engage in negative social comparison as well as a low likelihood to engage in prosocial behavior will be most likely to engage in risky behavior. Additionally, the researcher also predicts that older adolescents viewing risky images with high social desirability feedback will be more willing than any other group to engage in risky behavior. They will also rate the perceived risk of a subsequent risky behavior shown in a photo as less risky than any other group

Motor vehicle crashes are the leading cause of teenage deaths in the United States, highlighting the need for ways to reduce teenage driver crash rates. Adolescents (n = 176, M age = 16.4 years, 53% female) and their parents (n = 204, 71% mothers) self-reported on parenting style, driving restrictions, and risky driving. Results showed that more parental restrictions were associated with less adolescent risky driving. Three-way interactions were found such that more restrictions were associated with less concurrent risky driving in boys only under conditions of high parental warmth, structure, or autonomy support. Parenting style generally did not moderate the association for girls, although more restrictions were associated with less risky driving one year later for girls only in the context of low autonomy support. Findings are discussed in terms of how parenting may differentially affect risky driving as a form of risk-taking versus risky driving stemming from inexperience.

Master of Science / Department of Psychological Sciences / Kimberly Kirkpatrick / The present experiments examined the effect of different uncertain-reward magnitudes (i.e., gains and losses) on global and local probabilistic choice behavior in rats. In two experiments, rats were given a choice between a variable-amount certain outcome that delivered 2 or 4 pellets and a variable-amount uncertain outcome that probabilistically delivered a larger reward. In Experiment 1, the larger uncertain outcome was always 11 pellets and different groups received 1, 2, or 4 pellets for the uncertain small reward. In Experiment 2, the uncertain small reward was always 4 pellets and different groups received 6, 9, or 11 pellets for the uncertain large reward. In both experiments, the rats increased their uncertain choice behavior with the probability of uncertain food. In Experiment 1, the magnitude of the uncertain small outcome affected choice behavior; there was no such effect of the uncertain large reward magnitude in Experiment 2. The group differences in choice behavior suggest that the expected value of the certain choice served as a reference point distinguishing uncertain gains and losses, and that the rats exhibited differential sensitivities to such outcomes. As some extant theoretical frameworks of choice behavior seem unable to account for all of the present data, a possible mechanism for the present results is proposed. These results emphasize the importance of identifying the choice outcomes that constitute gains and losses in animals such that the effects of prior uncertain gains and losses on subsequent choice behavior can be adequately and comprehensively understood.

Master of Public Health / Department of Diagnostic Medicine/Pathobiology / Douglas Powell / Outbreaks of human illness have been linked to visiting settings with animal contact throughout developed countries. These outbreaks demonstrate that although contact with animals in public settings can provide educational and entertainment opportunities, the potential to spread disease exists if risk-reduction tools are not implemented, proper hygiene measures aren’t practiced, and precautions are not taken and reinforced. This thesis is divided into two parts. Part one is an observational study of hand hygiene tool availability and recommendations; frequency of risky behavior; and, handwashing attempts by visitors in Kansas and Missouri, U.S., petting zoos. Part two delineates best practices for organizing events where human-animal interactions are encouraged, in hopes it will lower the risk of zoonotic disease transmission. Handwashing signs and hand hygiene stations were available at the exit of animal-contact areas in 10/13 and 8/13 petting zoos respectively. Risky behaviors were observed being performed at all petting zoos by at least one visitor. Frequently observed behaviors were: children (10/13 petting zoos) and adults (9/13 petting zoos) touching hands to face within animal-contact areas; animals licking children’s and adults’ hands (7/13 and 4/13 petting zoos, respectively); and children and adults drinking within animal-contact areas (5/13 petting zoos each). Of 574 visitors observed for hand hygiene when exiting animal-contact areas, 37% (n=214) of individuals attempted some type of hand hygiene, with male adults, female adults, and children attempting at similar rates (32%, 40%, and 37% respectively). Visitors performed hand hygiene more often when a staff member was present within or at the exit to the animal-contact area (136/231, 59%) than when no staff member was present (78/343, 23%; P < 0.001, OR = 4.863, 95% CI = 3.380–6.998), and in petting zoos where animal contact occurred over a fence (188/460, 40.9%) as opposed to visitors entering an animals’ yard for contact (26/114, 22.8%; P < 0.001, OR = 2.339, 95% CI = 1.454–3.763). Inconsistencies existed in tool availability, signage, and supervision of animal- contact. Risk communication was poor, with few petting zoos outlining risks associated with animal-contact, or providing recommendations for precautions to be taken to reduce these risks. Recommendations made in the second part of this thesis were based on these observations, recent publications, and the suggestions of many health agencies. It focuses on what event planners can do to design and plan a safer event, and what staff working at the event should be aware of in order to inform visitors and lower the risk of zoonotic disease transmission. Part two discusses two primary tools to reduce risk of zoonotic disease transmission: sanitation and awareness of risk behaviors. Keeping facilities, animals, and visitors clean, and informing visitors of risky behaviors to avoid, while reinforcing positive messages within the animal- contact area, can lower the risk of zoonotic infection. Included with the second part, is a checklist (see appendix A) designed for visitors to assess whether an event that encourages human-animal interaction poses a high or low risk. By identifying possible risk factors, teachers and parents will be able to make an informed decision about the safety of the human-animal encounter.

Master of Science / Department of Family Studies and Human Services / Karen Myers-Bowman / Female adolescent sexual behavior has several potential negative life consequences including: pregnancy, sexually transmitted infection, and HIV/AIDS. Educating parents on how they play a role in the decision-making process regarding the sexual behavior of their adolescent daughters has important implications for Family Life Educators. This thesis explores maternal influence on the risky sexual behavior of female adolescents related to age at first sexual intercourse, contraceptive use, and number of partners. ANOVA was used to explore the relationships between a variety of aspects in the mother-daughter relationship. Findings show there are associations between time spent together, perceptions of closeness, and communication in mother-daughter relationships, and contraceptive use at first and most recent intercourse and total number of partners.

Background: Risky play is defined as thrilling and challenging forms of play that have the potential for physical injury and has been linked to development and health benefits for children in the early years such as risk-assessment skills, increased physical activity (PA) and well-being, and promoting social competencies and resilience. Currently, in a Western context, children’s opportunities for risky play is decreasing. At the same time, childhood inactivity and coinciding health concerns, as well as adolescent mental health issues such as anxiety, are on the rise. Risky play may serve as an antidote to some current health problems for children. Purpose: This research aimed to increase understanding of affordances (environmental factors that intersect with and influence human behaviors) for risky play. Social and physical environmental factors have been found to influence children’s affordances for risky play. The study was designed to identify some of the social factors and environmental features that may provide children with greater opportunity for risky play. Alongside researching affordances for children’s risky play, this research also inquired into children’s emotional and behavioural expressions during risky play, and how children’s engagement in risky play impacts PA. Methodology: Research was conducted with children ages 3 to 4 years, at a kindergarten in Levanger Norway. A mixed-methods approach was employed. Methods of data collection and analysis consisted of coding and statistical analysis of focused-video observations, as well as thematic analysis of field notes and semi-structured interviews. Findings/conclusions: Findings include the identification of themes pertaining to social factors that may influence children’s opportunity for risky play, including childhood assumptions, practitioner and parent attitudes towards risk, and pedagogical practice. This research generated a taxonomy of environmental features affording risky play, as well as findings that suggest risky play is positively correlated with levels of PA and outdoor settings. / Graduate

The concept of a celebrity has shifted with the rise of social media influencers, individuals with massive influence on young audiences across different social media platforms. Despite extensive research on risk-taking behavior amongst adolescents as well as the impact of celebrities on adolescent behavior, there has been no research on the specific role influencers have on adolescent behaviors and attitudes. The purpose of this proposed study is to investigate different types of YouTubers and if they have an influence on adolescent risk perception. Using an experimental longitudinal design, participants aged 15 to 18 will be randomly assigned into an experimental condition (where they will be required to watch YouTube videos by influencers that promote negative and reckless behavior) or a control condition (where they will be required to watch neutral YouTube videos of technology reviews). They will watch the videos for eight weeks, and then fill out a risk perception questionnaire. It is predicted that those in the experimental condition will have a significantly reduced risk perception. It is also predicted that males will have a significantly reduced risk perception than females. Lastly, it is predicted that frequent exposure to external violent media, aside from YouTube, will lead to a reduced risk perception. The research findings will have important implications on how to prevent adolescents from making risky decisions that put themselves and others in harm, as well inform parents and social media companies such as YouTube on what content is appropriate for adolescents.

Posttraumatic stress disorder (PTSD) has been linked to heightened engagement in risky sexual behavior (RSB) across diverse samples, and impulsivity has been postulated as a potential linkage (Weiss et al., 2012). Limited information has been published on the role that impulsivity can play in strengthening the relationship between PTSD and RSB in college students. The current study examined the moderating role of impulsivity dispositions: negative/positive urgency, (lack of) perseverance, sensation seeking, and (lack of) premeditation on the association between PTSD symptoms and past-year RSB among a sample of 221 undergraduate students (77.4% female) with at least one DSM-5 defined traumatic event. Negative binomial regression models were conducted to explore each impulsivity disposition’s moderating effect on the relationship between PTSD symptoms and RSB. PTSD symptoms and positive urgency, (lack of) perseverance, and sensation seeking were independently associated with RSB. Significant interactions were found between negative urgency and PTSD symptoms, and (lack of) premeditation and PTSD symptoms, such that PTSD symptoms were more strongly linked to RSB among individuals high in these impulsivity dispositions. The present study expands on the limited literature on the role specific impulsivity dispositions can have in the relationship between PTSD and RSB in trauma-exposed college students.