Cognitive-behavioral treatment with and without response prevention for Bulimia

We compared cognitive-behavior therapy (CBT) with and without exposure and response prevention (ERP) in the treatment of eating disorder patients who both binged and purged, and reported abnormal attitudes concerning body weight and shape. Both treatments produced significant and comparable reductions in binge-eating and purging, eating patterns, and attitudes about weight and shape at posttreatment. Treatment effects were generalized to improvements in different measures of general psychopathology, and were maintained over follow-ups of 3 and 12 months. The findings are consistent with prior research showing that CBT is an effective treatment for patients with the core features of bulimia nervosa. Furthermore, the data suggest that the addition of in-session exposure and response prevention does not enhance the effectiveness of the basic CBT program.     

Evaluation of A Single Presentation Format For Education About Human Immunodeficiency Virus (HIV) Disease1

This study explored the efficiency and effectiveness of a single presentation format for education about human immunodeficiency virus (HIV) disease. Pretraining and posttraining questionnaires assessing knowledge and risk assessment were given to police officers attending a two-hour seminar on HIV disease. A one-way ANOVA was used to compare posttraining scores of 42 officers who attended the seminar one year ago with the pretraining scores of 63 officers currently attending the seminar, some of whom had attended the seminar one year earlier. Significant differences were found on knowledge items (p < .05). Post hoc analysis revealed no significant decline in knowledge scores after one year, while pretraining knowledge scores for those who had attended the seminar before were significantly greater than for those who had not. No significant differences were found on risk assessment items, suggesting that beliefs about on the job risk have become part of the officers' common culture.     

Sexual harassment of university faculty by colleagues and students

The focus of this research was on faculty members as victims of sexual harassment by colleagues (peer harassment) and students (contrapower harassment). A self-administered, mailed questionnaire was sent to a probability sample of faculty at a large, public Midwestern university and to the whole population of faculty at a small, public institution in the Western Mountain region. Several hypotheses were made based on conflict theory, role theory, and previous research. Results indicated that women faculty generally have more negative attitudes toward and broader definitions of sexual harassment than do male faculty. Moderate levels of sexual harassment of faculty by both colleagues and students were reported; minor and anonymous (course evaluations and obscene phone calls) forms were the most common. Female faculty were more likely to report harassment by colleagues; male faculty were more likely to report some potentially harassing behaviors by students. Incidents of sexual harassment were usually not reported to formal agents of social control.This research was funded, in part, through the Small Grant Program of the Office of Research and Sponsored Activities, Illinois State University. The author would like to thank Krista Moore for her assistance in data collection at the Colorado site, Nancy Uphoff for her assistance with the library research, Robyn Leech and Ann Marie Woods for coding and data entry, and Elizabeth Grauerholz and Susan Specher for their comments on an earlier draft of this paper.     

Apparent duration of long meaningful events and meaningless intervals

Time estimates of 1 1/2-, 5¼-, and 14 1/2-min intervals were obtained from 12 American graduate students and 12 Indian graduate students by the methods of verbal estimation and cross-modality matching. Material presented during stimulus intervals varied in degree of meaningfulness. Each subject was tested on 4 successive days with basically the same material in order to determine the effects of repetition. The relationship between perceived and physical time was found to follow Stevens’ power law, and confidence limits of exponents obtained in this study include the exponents previously reported for short durations. Neither actual judgments nor exponents were affected by cultural background or by cognitive factors such as memory for material presented in the interval, familiarity, complexity, degree of meaningfulness, and repetition. It had previously been reported that time judgments were dependent on these cognitive factors. In light of the present research, it is necessary to review and replicate those studies which support a cognitive view of time perception.     

Letter versus dot stimuli as tools for “splitting the normal brain with reaction time”

Filbey and Gazzaniga (1969) found simple dot-present or -absent reports averaged 35 ms slower for the left than for the right visual field. Other data suggests that verbal processing efficiency differences between the cerebral hemispheres, rather than transcallosal transfer time alone, must be tapped to obtain half-field differences as large as 35 ms. Three experiments were conducted. The first failed to show any half-field differences in vocal RT for dot detection; the second replicated previous reports of significant right field superiority of vocal RT to letter stimuli for right handers, and also showed a substantially smaller half-field difference for left handers; the third experiment, utilizing the fixation control procedure of the second experiment, again failed to show half-field differences for the dot detection paradigm. Differences between the Filbey and Gazzaniga and present results probably reflect important procedural differences. We conclude that transcallosal transfer time for simple dot information is much smaller than assumed by Filbey and Gazzaniga and that the letter report-time task taps hemispheric asymmetries of verbal processing efficiency.     

A Mind of Her Own: Effects of Need for Closure and Gender on Reactions to Nonconformity

Research on opinion deviance suggests thatconformity and agreement with the established majorityis generally valued in groups. The present studyexamines how motivations for cognitive closure mayinfluence reactions to conforming and deviating membersbased on accessible gender role expectations. Caucasianmales and females participated in a group discussionwith confederates who either conformed or deviated from the majority opinion. Results showed thatgroup members motivated to reach cognitive closurenegatively evaluated female opinion deviants relative toconformists. However, contrary to previous research findings, they did not derogate male deviants.Motivation to avoid closure led to different evaluativepatterns by male and female evaluators. In addition toimportantly modifying results obtained by Kruglanski and Webster (1991) regarding closure motivationand conformity versus deviance, the current results arealso informative regarding gender role expectations andintra-group interactions. Limitations and implications of these results are alsodiscussed.     

Accepting and exempting the unexpected: 30-month-olds'' generalization of event knowledge

In 2 experiments, we used elicited imitation to test the effects of the amount and type of change to a previously experienced event on 2.5-year-olds' generalization of event knowledge. In Experiment 1, children were shown and then enacted event sequences. At two subsequent visits the props used to enact some of the sequences were completely or partially replaced by functionally equivalent props. Children used the new props to enact the events, thereby demonstrating spontaneous generalization. Nevertheless, as in previous research (Bauer & Fivush, 1992), there were decrements in performance associated with the prop-change manipulation. In Experiment 2, we examined in more detail the determinants of disruption to generalization. Results indicated that an interaction of the location and amount of change within pairs of actions joined by enabling relations (i.e., change to both members of a pair of actions occurring early in the event sequence) negatively affected generalization. Across locations, there was a greater negative effect on generalization when change was made to an antecedent rather than a consequent member of an enabling pair. We suggest that influences on the accommodation of change within events can be understood by considering the organizational role played by the elements subject to change.     

Olfaction in Persons with Alzheimer's Disease

The need for low cost, noninvasive procedures for aiding in the diagnosis and understanding of Alzheimer's Disease (AD) has led to theories and procedures examining the role of olfactory disorders because of the finding that the brains of AD patients invariably exhibit neuropathology hi the hippocampus and entorhinal cortex. This loss correlates with the increase in the number of plaques and tangles and with the severity of dementia. Considered together, these findings suggest that brain structures closely related to the olfactory system demonstrate significant histopathology in AD. A comprehensive review of the literature pertaining to olfaction in persons with AD revealed that the olfactory identification ability of patients with memory disorders is impaired relative to controls. Consistency is lacking, however, when olfactory detection thresholds are investigated. Also, there is inconsistency in regards to severity of illness and olfactory function. In addition to differentiating AD patients from normals, the olfactory paradigm has shown some limited usefulness in differentiating AD patients from some other demented patients.     

Predicting environmental learning from spatial abilities: An indirect route

Relationships among spatial abilities, as assessed by a battery of psychometric tests and experimental tasks, and environmental learning, as assessed by a series of macrospatial tasks, were examined in two studies using confirmatory factor analysis with directional paths. The initial study indicated the utility of a five-factor model, one (general spatial ability) derived from psychometric tests, two (spatial-sequential memory and spatial perspective-taking latency) from experimental tasks, and two (topological knowledge and Euclidean direction knowledge) from measures of environmental learning. The best fitting path model further indicated that the spatial-sequential memory factor mediated the relationship between general spatial ability and topological knowledge, and that perspective-taking latency mediated the relationship between general spatial ability and Euclidean direction knowledge. The second study confirmed the five-factor path model using a different participant sample and environmental setting. The only failure to replicate involved the path between perspective-taking latency in the lab and Euclidean direction knowledge in the environment. Results indicate that the relationship between basic spatial abilities and environmental learning is significantly mediated by cognitive processes that can be assessed using laboratory tasks.