The role of life events,family support,and competence in adolescent substance use: A test of vulnerability and protective factors

Tested propositions from a model of vulnerability and protective factors with a multiethnic sample of 1,289 urban adolescents, aged 11-13 years. The criterion variable was a composite score for cigarette, alcohol, and marijuana use. Multiple regression analyses indicated that vulnerability factors (negative life events, negative affect) were related to a higher level of substance use, and protective factors (parent emotional and instrumental support, academic and adult competence, positive affect) were related to a lower level of substance use; peer competence was positively related to substance use in a multivariate model. There was a significant overall interaction of Vulnerability x Protective Factors, consistent with a stress-buffering effect. Individual interactions for Life Events x Family Support, Life Events x Competence, and Negative x Positive Affect also were consistent with buffering effects. Implications for theories of substance use and primary prevention are discussed.     

Buffalo Creek Survivors in the Second Decade: Comparison with Unexposed and Nonlitigant Groups1

This study investigated the second-decade effects of the Buffalo Creek dam collapse and flood that occurred in West Virginia in 1972. One hundred twenty-one survivors who had participated in an earlier lawsuit against the coal company that built the collapsed dam were compared to 78 nonlitigant survivors on self-reported symptoms, clinical ratings, and diagnoses. A nonexposed sample from a geographically and culturally similar neighborhood was investigated as well. Findings showed no differences between the litigant and nonlitigant survivor groups. The survivor groups together showed higher rates of anxiety, depression, and hostility symptoms and diagnoses than the nonexposed sample. The findings were discussed in the context of the nature of the traumatic event, social and cultural influences on recovery, and the constellation of symptoms which differentiated the groups.     

Pavlovian theory of dreaming

Pavlovian theory provides a conceptual scheme for the examination of recent empirical data on dreaming. Consistencies are examined between these data and Pavlovian theory of the general properties of the nervous system. An equation is made between Pavlov’s excitation-inhibition continuum, the REM-NREM cycle, and the basic rest-activity cycle. Speculations, based on this equation, are made about the inter-relation between waking and sleeping behaviors. Testable hypotheses are suggested throughout the paper.     

Morality Predicts Enjoyment But Not Appreciation of Morally Ambiguous Characters

Understanding the role of morally ambiguous characters such as anti-heroes in entertainment experiences has become a central concern for media researchers. Some have argued that different character schemas or tropes may vary along specific moral domains, whereas others promote a linear progression of moral violation from hero to villain. This study presents the results of survey data (N = 294) examining the perceptions of established character tropes in terms of character morality, enjoyment, and appreciation responses. Popular perceptions of character tropes drawn from the website TV Tropes did not significantly differ in terms of which moral domains they upheld or violated, but demonstrated a linear progression of moral violation across five domains of morality. Perceptions of character tropes also did not differ significantly in associations with enjoyment, appreciation, or variables drawn from character identification literature such as self-expansion, wishful identification, or homophily. When examining media responses, however, self-expansion, wishful identification, and moral violation were all strongly related to enjoyment. Unlike enjoyment, appreciation was not related to moral violation. These results are discussed in terms of hedonic and eudaimonic responses to characters.     

The BAI–PC as a Screen for Anxiety, Depression, and PTSD in Primary Care

Despite the prevalence of psychiatric disorders in medical settings, mental health problems often go undetected and patients do not receive appropriate treatment. The main goal of this study is to provide additional information about the Beck Anxiety Inventory – Primary Care (BAI–PC), a brief instrument that screens for patients with anxiety. This study provides information on the performance of the BAI–PC as a screening instrument for depression and PTSD in addition to its original purpose as a screening instrument for anxiety. This efficient tool can identify patients who can benefit from effective psychological treatments and facilitate referrals to psychologists working in medical settings.     

Mathematics self-efficacy: stereotype threat versus resilience

Children’s academic self-efficacy is one of the strongest predictors of achievement (Wigfield and Eccles, Contemporary Educational Psychology 25(1): 68–81, 2000). The present research examined mathematics self-efficacy and the relationship of racial context from the perspective of two competing bodies of research. Stereotype threat theory would predict that, under conditions where negative stereotypes are salient, self-efficacy would decrease. So, Black/African American students in primarily White classrooms would be predicted to report lower self-efficacy. However, other research suggests that Black/African American students demonstrate fortitude even under disadvantage (e.g., Graham, Review of Educational Research, 64(1): 55–117, 1994). We examined the mathematics self-efficacy of 170 fifth-grade students. In contrast to stereotype threat theory, results suggested that Black/African American students’ self-efficacy remained stable regardless of the racial breakdown of the class. However, White students demonstrated elevated self-efficacy when in predominantly Black/African American classrooms. These results could not be explained by differences in classroom environments. Results are discussed in terms of resilience, ethnic identity and White identity.     

Preference,resistance to change,and the cumulative decision model

According to behavioral momentum theory (Nevin & Grace, 2000a), preference in concurrent chains and resistance to change in multiple schedules are independent measures of a common construct representing reinforcement history. Here I review the original studies on preference and resistance to change in which reinforcement variables were manipulated parametrically, conducted by Nevin, Grace and colleagues between 1997 and 2002, as well as more recent research. The cumulative decision model proposed by Grace and colleagues for concurrent chains is shown to provide a good account of both preference and resistance to change, and is able to predict the increased sensitivity to reinforcer rate and magnitude observed with constant‐duration components. Residuals from fits of the cumulative decision model to preference and resistance to change data were positively correlated, supporting the prediction of behavioral momentum theory. Although some questions remain, the learning process assumed by the cumulative decision model, in which outcomes are compared against a criterion that represents the average outcome value in the current context, may provide a plausible model for the acquisition of differential resistance to change.     

Rat choice in rapidly changing concurrent schedules

In two experiments, experimentally naïve rats were trained in concurrent variable‐interval schedules in which the reinforcer ratios changed daily according to a pseudorandom binary sequence. In Experiment 1, relative response rates showed clear sensitivity to current‐session reinforcer ratios, but not to previous sessions' reinforcer ratios. Within sessions, sensitivity to the current session's reinforcement rates increased steadily, and by session end, response ratios approached matching to the current‐session reinforcer ratios. Across sessions, sensitivity to the current session's reinforcer ratio decreased with continued exposure to the pseudorandom binary sequence, contrary to expectations based on previous studies demonstrating learning sets. Using a second group of naïve rats, Experiment 2 replicated the main results from Experiment 1 and showed that although there were increases over sessions in both changeover rate and response rate during the changeover delay, neither could explain the accompanying reductions in sensitivity. We consider the role of reinforcement history, showing that our results can be simulated using two separate representations, one local and one nonlocal, but a more complex approach will be needed to bring together these results and other history effects such as learning sets and spontaneous recovery.