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J A Mulick

Publications and source records attributed to J A Mulick.

42 records · Page 3Linked to original sources

Alternative response training, differential reinforcement of other behavior, and extinction in squirrel monkeys (Saimiri sciureus).

In Experiment I, (a) extinction, (b) extinction plus reinforcement of a discrete alternative response, and (c) differential reinforcement of other behavior were each correlated with a different stimulus in a three-component multiple schedule. The alternative-response procedure more rapidly and completely suppressed behavior than did differential reinforcement of other behavior. Differential reinforcement of other behavior was slightly more effective than extinction alone. In Experiment II, reinforcement of specific alternative behavior during extinction and differential reinforcement of other behavior were used in two components, while one component continued to provide reinforcement for the original response. Once again, the alternative-response procedure was most effective in reducing responding as long as it remained in effect. However, the responding partially recovered when reinforcement for competing behavior was discontinued. In general, responding was less readily reduced by differential reinforcement of other behavior than by the specific alternative-response procedure.

Journal Article↗

Sex differences in the effects of dexamethasone phosphate on behavior in rats.

The effect of dexamethasone phosphate (DEX) administered in rats' drinking water on running activity and open field behavior was investigated. In Experiment 1 males were given DEX continuously from either five days or one day prior to and throughout testing. Only 5 day treatment significantly increased running wheel activity. DEX had no significant effect on males' 4 day open field activity, but significantly reduced open field and home cage defecation. In Experiment 2 females given DEX defecated significantly more in the open field than controls. This effect on females does not appear to be due to a general metabolic change, since DEX females, like males, defecated significantly less than controls in the home cage. Females' open field activity was not significantly affected. Weight loss and plasma corticosterone analysis confirmed the effectiveness of the dosage used. There appears to be a sex difference in the effects of DEX on open field defecation, possibly due to interaction with gonadal hormones.

Animals↗

Control of their environment reduces emotionality in rats.

Rats reared from birth in a "contingent environment" in which they controlled lighting conditions and the delivery of food and water were compared as adults to rats reared in an environment in which they received the same food, water, and lighting conditions, but without control over their occurrence. Rats reared in the contingent environment were less emotional, as judged by activity and defecation scores in open-field testing.

Animals↗

Nonambulatory persons with profound mental retardation: physical, developmental, and behavioral characteristics.

Although profound mental retardation is generally associated with various organic etiologies that result in substantial cognitive and behavioral deficits, little is known about specific subgroups of persons with profound mental retardation. This study presents data on the physical, developmental, and behavioral characteristics of a group of 203 nonambulatory persons with profound mental retardation residing within a specialized service setting. The results indicate that nonambulatory persons with profound mental retardation have a high prevalence of physical and medical problems along with high rates of self-injurious, stereotypic, and aggressive behavior. Assessment results from the Stanford-Binet (L-M), Bayley Scales of Infant Development-Mental Scale, and Vineland Adaptive Behavior Scale reveal a high degree of variability in cognitive and adaptive functioning. However, developmental age-equivalent scores of cognitive ability, communication, daily living, socialization, and motor skills for the group fell below the 1-year level. The data illustrate the complexity of needs in providing habilitative services to nonambulatory persons with profound mental retardation.

Activities of Daily Living↗

Special oral concerns in people with severe and profound mental retardation.

Dental patients with severe and profound mental impairments may engage in behaviors that adversely affect their oral health. Based on experience in a residential care facility, this report sensitizes dental practitioners, who are unfamiliar with the problems of these patients, to consequences of these behaviors.

Bruxism↗