The role of central and peripheral vision in postural control duringwalking

Three hypotheses have been proposed for the roles of central and peripheral vision in the perception and control of self-motion: (1) peripheral dominance, (2) retinal invariance, and (3) differential sensitivity to radial flow. We investigated postural responses to optic flow patterns presented at different retinal eccentricities during walking in two experiments. Oscillating displays of radial flow (0° driver direction), lamellar flow (90°), and intermediate flow (30°, 45°) patterns were presented at retinal eccentricities of 0°, 30°, 45°, 60°, or 90° to participants walking on a treadmill, while compensatory body sway was measured. In general, postural responses were directionally specific, of comparable amplitude, and strongly coupled to the display for all flow patterns at all retinal eccentricities. One intermediate flow pattern (45°) yielded a bias in sway direction that was consistent with triangulation errors in locating the focus of expansion from visible flow vectors. The results demonstrate functionally specific postural responses in both central and peripheral vision, contrary to the peripheral dominance and differential sensitivity hypotheses, but consistent with retinal invariance. This finding emphasizes the importance of optic flow structure for postural control regardless of the retinal locus of stimulation.     

Alcohol Consumption and the Theory of Planned Behavior: An Examination of the Cognitive Mediation of Past Behaviorid

This study examined the predictive power of the theory of planned behavior (TPB) in explaining alcohol consumption in 3 prospective samples of students ( Ns = 178. 176. and 159). Generally, the TPB performed well. with attitudes, subjective norms and perceived behavioral control (PBC) explaining between 28% and 46% of the variability in intentions. Intentions and PBC explained between 12% and 50% of the variability in behavior. Measures of self-identity as a "drinker" and past behavior contributed to predictions of intentions over and above the contribution of attitudes. subjective norms. and PBC. Measures of past behavior but not self-identity consistently contributed to predictions of behavior over and above the contributions from intentions and PBC. The direct relationship between past behavior and intention and between past behavior and behavior (independent of the TPB variables or self-identity) could not be attributed to common method variance.     

Further validity and normative data for the Malouff and Schutte belief scale

The present study provides further validity and normative data for the Malouff and Schutte (1986) Belief Scale. Belief Scale, Eysenck Personality Questionnaire-Neuroticism Scale, and Beck Depression Inventory scores of a sample of 197 adults were correlated, and evidence for both construct and discriminant validities and support for the RET model were obtained. The Belief Scale appears to be a promising instrument for clinical research and the assessment of irrational beliefs.Ricks Warren, Ph.D. is the Director of the Anxiety Disorders Clinic, Lake Oswego, Oregon, and Associate Clinical Professor at the Oregon Graduate School of Professional Psychology, Pacific University. George D. Zgourides, M.A., is a doctoral student in clinical psychology at Pacific University of Forest Grove, Oregon and an associate therapist at the Anxiety Disorders Clinic of Lake Oswego, Oregon.     

Wepman test of auditory discrimination: What does it discriminate

This study investigated auditory discrimination as a function of ethnic group membership within the same socioeconomic status (SES). Subjects were 126 randomly selected six-year-old students attending schools in the lower SES community of southeast San Diego. Only students with no known speech or hearing defects and of normal intelligence were included. They were assigned to one of three categories: Black, Chicano, or Anglo.Subjects were administered four tests in a counterbalanced design: the Wepman, the Gross, and the Ott. The latter two were developed for use with Black dialect and Spanish-speaking youngsters, respectively. The ANOVA results indicated a reliable difference between the main effects of the groups (F=40.34,p<.001) and tests (F=72.82, p<.001), with a significant interaction between tests and groups (F=44.91, p<.001). Interaction effects were evaluated with the Dunn theorem. Significant differences were found among Anglo, Black, and Chicano students on the discrimination list for Spanish sounds (Ott) and a significant Anglo/Black difference on the discrimination test for Black dialect (Gross). Contrary to previous findings, there were no differences between the groups on the Wepman Test of Auditory Discrimination (WTAD). However, there are significant differences between groups on separate items of this test.     

Examining mental health symptoms in male and female incarcerated juveniles

Varying risk factors for both incarceration and mental health diagnoses have been identified for female juveniles, highlighting the need for gender-specific assessments and treatment protocols. The purpose of this study is to determine how the prevalence rates of mental health symptoms differ in male and female juvenile offenders. It was hypothesized that the prevalence rates would be greater for females than males. This study found significant differences between males and females on several clinical scales. These findings are consistent with past studies that have identified differences in mental health symptoms between genders.     

Beauty, Ethnicity, and Age: Does Internalization of Mainstream Media Ideals Influence Attitudes Towards Older Adults?

Mainstream North American media promotes the message that attaining a thin, youthful appearance is central to a woman’s value and social role while appearing older is highly undesirable. However, appearance ideals and attitudes toward aging differ substantially across cultural and ethnic groups, which may influence the degree to which one internalizes media ideals and holds anti-aging attitudes. Consequently, this study examined the relationships between internalization of the youthful, thin-ideal appearance perpetuated by mainstream North American media and attitudes toward the elderly in a sample of 281 undergraduate females under the age of 30 attending a university in the Western United States. Specifically, European American (n?=?115), Asian American/Pacific Islander (n?=?74), Hispanic/Latina (n?=?52), and African American (n?=?42) women voluntarily completed self-report measures of internalization of media ideals and attitudes towards older adults. Attitudes towards the elderly were significantly more negative at higher levels of internalization of North American appearance ideals, independent of ethnicity. These data suggest that internalization of North American appearance ideals perpetuated by media are related to negative attitudes towards older adults. Future research should investigate the influence of negative attitudes about aging on behaviors toward older adults or one’s own aging process.