REDUCING SEVERE DIURNAL BRUXISM IN TWO PROFOUNDLY RETARDED FEMALES

Several diurnal audible teeth grinding (bruxism) was found to affect 21.5% of a profoundly retarded population. However, no previous research has treated bruxism in retarded individuals. In the current study a multiple baseline across subjects design was used to assess the effectiveness of contingent “icing,” brief contingent tactile applications of ice, as a treatment for bruxism. Three 15-minute treatment periods and two 5-minute generalization periods were conducted 5 days per week. One resident displayed a 95% reduction in the percentage of intervals during which bruxism occurred during treatment periods and a 67 % reduction during generalization periods. The other resident displayed a 94% reduction in the percentage of intervals during which bruxism occurred during treatment periods and a 53% reduction during generalization periods.     

Factor comparison of two Minnesota Multiphasic Personality Inventory short forms

A sample of 315 valid Minnesota Multiphasic Personality Inventory (MMPI) protocols were selected from inpatient files and scored for both the MMPI-168 and Faschingbauer Abbreviated MMPI short forms. Each short form was then factor-analyzed by a principal axis strategy with varimax rotation. The six factors extracted from each short form were then compared as to their similarity by use of the s index. This procedure showed five of the six factors in each short form as having a significant relationship of the pattern of salient variables they had in common with the complimentary factors of the other form. These data suggest that both short forms, though based on different construction methodologies, share the same underlying personality attributes. Future research is suggested to replicate these results and extend them to the full MMPI.     

Contralateral enhancement and suppression of vibrotactile sensation

A psychophysical matching procedure was used to measure the effect of a conditioning stimulus on the vibrotactile sensation magnitude of a test stimulus. When both stimuli were applied to the thenar eminence of the same hand, the conditioning stimulus enhanced the sensation magnitude of the test stimulus. Enhancement was also observed when the test stimulus was on the thenar eminence and the conditioning stimulus was either on the contralateral thenar eminence, the ipsilateral middle finger, or the contralateral middle finger. When the conditioning and test stimuli were applied to separate sites, enhancement was maximal when At between the stimuli was 150 msec. At Ate less than 100 msec, suppression was observed. Enhancement and suppression were observed only when the frequencies of the two stimuli were within the same vibrotactile information processing channel.     

Retention by “fast” and “slow” learners

Four experiments were conducted to replicate and extend the findings by Shuell and Keppel (1970) as well as others, that when properly equated for original learning, “fast” and “slow” learners have parallel forgetting curves. In Experiments I and II, the Shuell-Keppel findings, originally demonstrated on American students learning lists of words, were replicated on samples of Nigerian students. In Experiments III and IV, Nigerian and American students, respectively, learned poems to a criterion of 75–90% correct and were tested for retention. In all studies, “fast” and “slow” learners were brought to a similar learning criterion, with the result that their forgetting curves were parallel.     

Fear assessment in a dental analogue setting

An analogue setting for assessing dental fear involving a videotaped simulated dental operation was evaluated in terms of its capability of eliciting differential physiological arousal (Palmer Sweat Index) between high- and low-fear subjects, identified by self-reports of dental fear. Results showed high-fear subjects to exhibit significantly greater palmar sweating than did low-fear subjects, females to respond more than males, and a differential response across groups at different points during the simulated operation. High-fear subjects also gave verbal reports of greater physiological arousal and general anxiety while viewing the operation than did low-fear subjects.     

Cognitive style and relationship quality in married dyads

Recently, cognitive personality researchers have begun to explore the social and interpersonal relevance of cognitive individual difference variables. Embedded in these examinations, however, is a methodological issue that bears importantly on our understanding of the role of these cognitive orientations in social relations. Specifically, personality studies have typically employed experimentally created dyads which, by limiting the representativeness of the sample, potentially limits the generalizability of the findings to more enduring “real-life” dyads. In the present study, field dependence/field independence was examined as a potential mediator of relationship quality in married dyads. Consistent with Witkin's theory of psychological differentiation, it was predicted that spouses with relatively field-dependent partners and individuals from dyads with similar levels of differentiation would have fewer complaints. Results showed, contrary to the predictions, that husbands married to field-dependent wives and wives from matched dyads had more complaints about their marital relationships. These findings suggest the need for a careful evaluation of the role of cognitive style in the domain of intimate interpersonal relationships. Apparently, it may not be sufficient to generalize about the role of personality in social relationships from the results of studies employing experimentally created dyads or groups to other, more enduring and real-life types of social relationships.     

A large-scale expandable I/O port interface for the TRS-80 microcomputer

Described is a large-scale expandable input/output port interface for the Tandy Corporation TRS-80 microcomputer.     

Memory in educable mentally retarded adults: Deficit in subject or experimenter?

Educable mentally retarded (EMR) and nonretarded adults free recalled lists of (a) words, (b) minitasks performed by the subjects (SPTs), (c) minitasks performed by the experimenter (EPTs), or (d) task instructions. The EMR subjects were significantly inferior to the nonretarded subjects in the immediate recall of words, EPTs and instructions, but not in the immediate recall of SPTs. This proficiency of the EMR subjects in SPT recall was attributed to the nonstrategic nature of this test. The EMR subjects were, however, inferior to the nonretarded subjects in a final free recall (recall of all lists) of all four types of item.