Beyond Cultivation: Exploring the Effects of Frequency,Recency, and Vivid Autobiographical Memories for Violent Media

Using Shrum's (1996) heuristic processing model as an explanatory mechanism, we propose that people who hold vivid autobiographical memories for a specific past experience with media violence will overstate the prevalence of real-world crime versus individuals without vivid memories. We also explore the effects of frequency and recency on social reality beliefs. A survey was administered to 207 undergraduate students who were asked to recall one violent television program or movie seen in the past. Participants were asked to write essays describing the violence, which were coded for vividness. Results support not only cultivation theory, but also the effects of memory vividness: participants with more vivid memories of blood and gore gave higher prevalence estimates of real-world crime and violence than participants with less vivid memories. Findings also suggest that females had more vivid memories for prior media violence than males. Implications for cultivation, the heuristic processing model, and vividness research are discussed.     

On the determinants of induction in responding for sucrose when food pellet reinforcement is upcoming

Rats' rates of leverpressing for low-concentration liquid-sucrose reinforcers in the first half of an experimental session increase when food pellet, rather than sucrose, reinforcers will be available in the second half. Experiment 1 determined that this induction effect was the outcome of food pellet reinforcement's increasing response rates, not of continued sucrose reinforcement's decreasing them. Experiments 2 and 3 showed that induction was primarily controlled by the conditions of reinforcement in the current session, not by those in the previous one. Experiment 4 showed little evidence that the induction was the outcome of Pavlovian processes. These results suggest that induction may occur because of processes operating at the level of the entire session. They also provide a link to a seemingly related area of study: contrast effects. Some of the results are consistent with what is known about contrast effects, but there are also several, yet unexplained differences.     

Gender‐bias hate crimes: what constitutes a hate crime from a potential juror's perspective?

The current study explored hate crime in a nontypical scenario. Label of the crime (first‐degree assault vs. bias‐motivated assault) and gender of the victim were varied within the context of an attack perpetrated within other gender dyads (i.e., when the victim was female, the perpetrator was male, and vice versa). Results indicated that participants in the assault condition were more likely to find the defendant guilty than those in the hate crime condition. Participants also made differential attributions of victim blame, such that those in the assault condition found the victim to be more mentally unstable than those in the hate crime condition.     

Towards a Social-Structural Model for Understanding Current Disparities in Maori Health and Well-Being

Colonization has resulted in Maori occupying a vulnerable position in New Zealand society. Comparatively poor health, along with complex social and economic problems, is a reflection of this fundamental insecurity. This article aims to put forward a historical and developmental perspective for understanding some of the current health disparities experienced by Maori, by exploring the concepts of historical trauma, loss of land, and alternative theories of development from post-development theory.     

Barriers to Mental Health Care: A 25‐Year Follow‐Up Study of the Orthodox Jewish Community

The current study is a 25‐year follow‐up to a mental health needs assessment in the often overlooked, but rapidly growing, Orthodox Jewish denomination. Results suggest increased acceptance of mental illness and its treatment and satisfaction with quality of care, along with decreased mistrust of the mental health field, belief that religion and psychiatry conflict, and tendency to attach stigmas to psychiatric problems. However, issues of stigma and affordability continue to be obstacles to treatment. El presente estudio es un seguimiento tras 25 años de una evaluación de necesidades de salud mental en la población frecuentemente ignorada, pero en crecimiento rápido, de individuos de denominación judía ortodoxa. Los resultados sugieren una mayor aceptación de enfermedades mentales y sus tratamientos, así como la satisfacción con la calidad de los cuidados, además de una reducción en la desconfianza hacia el campo de la salud mental, la creencia de que existe un conflicto entre religión y psiquiatría, y la tendencia a estigmatizar los problemas psiquiátricos. Sin embargo, problemas relacionados con la asequibilidad y el estigma continúan siendo obstáculos para el tratamiento.     

INVESTIGATING THE EFFECTS OF PREWRITING ACTIVITIES ON WRITING PERFORMANCE AND ANXIETY OF AT-RISK STUDENTS

Multiple regression analysis indicates that the Reading-Level Indicator, a paper-and-pencil test, is a moderately strong predictor for the high-stakes standardized test, the Florida Comprehensive Achievement Test in Reading. Classroom teachers can administer the inexpensive Reading-Level Indicator in a short period of time and use the results as a tool to identify students who need extra preparation before high-stakes tests. Assigning students to differentiated instructional groups based on Reading-Level Indicator scores could be an effective strategy for improving high-stakes test scores.     

Different types of environmental enrichment have discrepant effects on spatial memory and synaptophysin levels in female mice

Environmental enrichment paradigms that incorporate cognitive stimulation, exercise, and motor learning benefit memory and synaptic plasticity across the rodent lifespan. However, the contribution each individual element of the enriched environment makes to enhancing memory and synaptic plasticity has yet to be delineated. Therefore, the current study tested the effects of three of these elements on memory and synaptic protein levels. Young female C57BL/6 mice were given 3h of daily exposure to either rodent toys (cognitive stimulation) or running wheels (exercise), or daily acrobatic training for 6 weeks prior to and throughout behavioral testing. Controls were group housed, but did not receive enrichment. Spatial working and reference memory were tested in a water-escape motivated radial arm maze. Levels of the presynaptic protein synaptophysin were then measured in frontoparietal cortex, hippocampus, striatum, and cerebellum. Exercise, but not cognitive stimulation or acrobat training, improved spatial working memory relative to controls, despite the fact that both exercise and cognitive stimulation increased synaptophysin levels in the neocortex and hippocampus. These data suggest that exercise alone is sufficient to improve working memory, and that enrichment-induced increases in synaptophysin levels may not be sufficient to improve working memory in young females. Spatial reference memory was unaffected by enrichment. Acrobat training had no effect on memory or synaptophysin levels, suggesting a minimal contribution of motor learning to the mnemonic and neuronal benefits of enrichment. These results provide the first evidence that different elements of the enriched environment have markedly distinct effects on spatial memory and synaptic alterations.     

Differences in performance on a reversal learning test and division of labor in honey bee colonies

We studied the association between honey bee (Apis mellifera) division of labor and performance on an olfactory reversal-learning test. Manipulations of colony age structure and flight experience were used to test whether differences in performance are associated with age, current behavioral state, or flight experience. Nurse bees showed significantly faster rates of extinction to a learned odor than did foragers. This difference was associated primarily with differences in behavioral state, rather than age; it was seen when comparing nurses and foragers from typical colonies and normal-age nurses and precocious foragers from single-cohort colonies. Differences in extinction rate were not related to differences in flight experience; there was no difference between foragers and foraging-age bees denied flight experience. These results suggest that changes in learning and memory occur in association with division of labor. We speculate on the possible functional significance of the difference in extinction rate between nurses and foragers. Received: 15 January 2000 / Accepted: 22 August 2000