Sharing in the Context of Tobacco and E-Cigarette Communication: Determinants, Consequences, and Contingent Effects

Interpersonal communication has been shown to directly and indirectly influence various health behaviors, including smoking-related outcomes. However, the literature in this domain has mostly measured interpersonal communication as face-to-face conversations, and has treated such instances of communication as distinct from online forms of person-to-person communication. This dissertation is aimed at exploring sharing – an all-encompassing concept of person-to-person communication that covers both offline and online forms of communication – in the context of tobacco and e-cigarette communication, through three separate studies. Study 1 was a validation study that assessed the reliability and validity of a newly proposed sharing measure, providing a valid measure that could not only be used in the subsequent studies of this dissertation but also in future studies examining sharing in the tobacco and e-cigarette domain. In an effort to explore the nature of sharing, Study 2 examined the determinants of overall tobacco and e-cigarette sharing as well as sharing positive vs. negative tobacco and e-cigarette content. Findings showed that personal relevance and exposure to relevant information predicted sharing, and that personal relevance and normative perceptions interacted in their effects on the valence in which people shared. Study 3 was aimed at examining the consequences of sharing about tobacco and e-cigarettes. Specifically, it examined the direct effects of sharing on future intentions and behavior, as well as the contingent effects of sharing and pre-existing intentions on future behavior. Findings showed that sharing positive content predicted increased likelihood of intending to use and actually using tobacco and e-cigarettes. Furthermore, sharing consistently with intentions amplified the effect of those intentions on future behavior, while sharing inconsistently with intentions predicted reduced effects. Possible explanations for findings and potential areas for future research are discussed

Evaluating Mediated Perception of Narrative Health Messages: The Perception of Narrative Performance Scale

Narrative media health messages have proven effective in preventing adolescents’ substance use but as yet few measures exist to assess perceptions of them. Without such a measure it is difficult to evaluate the role these messages play in health promotion or to differentiate them from other message forms. In response to this need, a study was conducted to evaluate the Perception of Narrative Performance Scale that assesses perceptions of narrative health messages. A sample of 1185 fifth graders in public schools at Phoenix, Arizona completed a questionnaire rating of two videos presenting narrative substance use prevention messages. Confirmatory factor analyses were computed to identify the factor structure of the scale. Consistent with prior studies, results suggest a 3 factor structure for the Perception of Narrative Performance Scale: interest, realism, and identification (with characters). In addition, a path analysis was performed to test the predictive power of the scale. The analysis shows that the scale proves useful in predicting intent to use substances. Finally, practical implications and limitations are discussed

Evaluating Mediated Perception of Narrative Health Messages: The Perception of Narrative Performance Scale

Narrative media health messages have proven effective in preventing adolescents’ substance use but as yet few measures exist to assess perceptions of them. Without such a measure it is difficult to evaluate the role these messages play in health promotion or to differentiate them from other message forms. In response to this need, a study was conducted to evaluate the Perception of Narrative Performance Scale that assesses perceptions of narrative health messages. A sample of 1185 fifth graders in public schools at Phoenix, Arizona completed a questionnaire rating of two videos presenting narrative substance use prevention messages. Confirmatory factor analyses were computed to identify the factor structure of the scale. Consistent with prior studies, results suggest a 3 factor structure for the Perception of Narrative Performance Scale: interest, realism, and identification (with characters). In addition, a path analysis was performed to test the predictive power of the scale. The analysis shows that the scale proves useful in predicting intent to use substances. Finally, practical implications and limitations are discussed

PKA and ERK, but not PKC, in the amygdala contribute to pain-related synaptic plasticity and behavior

The laterocapsular division of the central nucleus of the amygdala (CeLC) has emerged as an important site of pain-related plasticity and pain modulation. Glutamate and neuropeptide receptors in the CeLC contribute to synaptic and behavioral changes in the arthritis pain model, but the intracellular signaling pathways remain to be determined. This study addressed the role of PKA, PKC, and ERK in the CeLC. Adult male Sprague-Dawley rats were used in all experiments. Whole-cell patch-clamp recordings of CeLC neurons were made in brain slices from normal rats and from rats with a kaolin/carrageenan-induced monoarthritis in the knee (6 h postinduction). Membrane-permeable inhibitors of PKA (KT5720, 1 μM; cAMPS-Rp, 10 μM) and ERK (U0126, 1 μM) activation inhibited synaptic plasticity in slices from arthritic rats but had no effect on normal transmission in control slices. A PKC inhibitor (GF109203x, 1 μM) and an inactive structural analogue of U0126 (U0124, 1 μM) had no effect. The NMDA receptor-mediated synaptic component was inhibited by KT5720 or U0126; their combined application had additive effects. U0126 did not inhibit synaptic facilitation by forskolin-induced PKA-activation. Administration of KT5720 (100 μM, concentration in microdialysis probe) or U0126 (100 μM) into the CeLC, but not striatum (placement control), inhibited audible and ultrasonic vocalizations and spinal reflexes of arthritic rats but had no effect in normal animals. GF109203x (100 μM) and U0124 (100 μM) did not affect pain behavior. The data suggest that in the amygdala PKA and ERK, but not PKC, contribute to pain-related synaptic facilitation and behavior by increasing NMDA receptor function through independent signaling pathways

Parent Prevention Communication Profiles and Adolescent Substance Use: A Latent Profile Analysis and Growth Curve Model

This current study identifies distinct parent prevention communication profiles and examines whether youth with different parental communication profiles have varying substance use trajectories over time. Eleven schools in two rural school districts in the Midwestern United States were selected, and 784 students were surveyed at three time points from the beginning of 7th grade to the end of 8th grade. A series of latent profile analyses were performed to identify discrete profiles/subgroups of substance-specific prevention communication (SSPC). The results revealed a 4-profile model of SSPC: Active-Open, Passive-Open, Active-Silent, and Passive-Silent. A growth curve model revealed different rates of lifetime substance use depending on the youth’s SSPC profile. These findings have implications for parenting interventions and tailoring messages for parents to fit specific SSPC profiles

Psychological Abuse, Mental Health, and Acceptance of Dating Violence Among Adolescents

Purpose Existing literature indicates that acceptance of dating violence is a significant and robust risk factor for psychological dating abuse perpetration. Past work also indicates a significant relationship between psychological dating abuse perpetration and poor mental health. However, no known research has examined the relationship between acceptance of dating violence, perpetration of dating abuse, and mental health. In addition to exploring this complex relationship, the present study examines whether psychological abuse perpetration mediates the relationship between acceptance of dating violence and mental health (i.e., internalizing symptoms of depression, anxiety, and hostility). Methods Three waves of longitudinal data were obtained from 1,042 ethnically diverse high school students in Texas. Participants completed assessments of psychological dating abuse perpetration, acceptance of dating violence, and internalizing symptoms (hostility and symptoms of anxiety and depression). Results As predicted, results indicated that perpetration of psychological abuse was significantly associated with acceptance of dating violence and all internalizing symptoms. Furthermore, psychological abuse mediated the relationship between acceptance of dating violence and internalizing symptoms. Conclusions Findings from the present study suggest that acceptance of dating violence is an important target for the prevention of dating violence and related emotional distress