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Biomedical subjects

R Cogan

Publications and source records attributed to R Cogan.

At least 19 recordsLinked to original sources

Self-reported visual function and academic success: Cattell revisited.

To test the hypothesis that visual deficits might hamper college students' academic success, we examined the relationship between a reliable self-report measure of visual function and semester grades. The correlation between the Everyday Vision Questionnaire scores and the grades of 331 college students was .01, which replicates and extends the historical findings of Cattell and others.

Achievement

Measures of shame and conflict tactics: effects of questionnaire order.

In the context of a theory of the intrapsychic dynamics of violent spousal relationships, in which abuse serves to replace shame with guilt, the effect of the order of presentation of questionnaires assessing shame, guilt, narcissism and conflict tactics was considered. Among 122 male and 133 female students, a shame score was significantly higher if the student had responded first to the Conflict Tactics Scale.

Adult

Memories of labor and birth: reliability of post partum questionnaire reports.

The stability of reports of feelings during vaginal births was assessed in three studies. In Study I, post partum reports from 475 primiparous women who participated in a childbirth preparation program were compared to identify differences between reports completed from the day of the birth to more than six weeks after the birth. In Study II, the post partum reports of 46 primiparous and 95 multiparous women completed 1, 3, or 6 mo. after giving birth were compared. In Study III, test-retest reliabilities were calculated for post partum reports completed by 22 primiparous and 16 multiparous women during the 5th and 7th post partum weeks. In these studies, reports of pain during labor were stable.

Female

Effects of laughter and relaxation on discomfort thresholds.

Two experiments were conducted to test the proposal that laughter is a pain antagonist. In Experiment I, thresholds for pressure-induced discomfort of 20 male and 20 female subjects were measured after each subject listened to a 20-min-long laughter-inducing, relaxation-inducing, or dull-narrative audio tape or no tape. Discomfort thresholds were higher for subjects in the laughter- and the relaxation-inducing conditions. In Experiment II, 40 female subjects were matched for pressure-induced discomfort thresholds. Their discomfort thresholds were measured after they listened to a laughter-inducing, interesting narrative, or uninteresting narrative audio tape, completed a multiplication task, or experienced no intervention. Discomfort thresholds increased for subjects in the laughter-inducing condition. Laughter, and not simply distraction, reduces discomfort sensitivity, suggesting that laughter has potential as an intervention strategy for the reduction of clinical discomfort.

Adult

Simultaneous disappearances of both images during binocular rivalry of contours and effect on eye-blink rate.

Simultaneous disappearances of both rivalry images were reported by 28 women who reported on the rivalry 3.2 degree diagonal rivalry contours for 10 min. of continuous viewing. The data support the notion that suppression of images during binocular rivalry is independent in both eyes. In a second study, 48 women reported simultaneous disappearances during the rivalry of 3.2 degree vertical and horizontal contours for 10 min. of continuous viewing under one of two blink-rate instruction conditions. Fewer simultaneous disappearances were reported by Ss instructed to blink every 5 sec. than by Ss instructed to blink every 15 sec. Blinking may reduce the probability of simultaneous disappearances in rivalry. In both studies, the fusion squares surrounding the rivalry stimuli were continuously perceived.

Eyelids