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Biomedical subjects

N McConaghy

Publications and source records attributed to N McConaghy.

At least 73 records · Page 4Linked to original sources
PubMed1986

Reduced P200 latency and allusive thinking: an auditory evoked potential index of a cognitive predisposition to schizophrenia?

Auditory evoked potentials were recorded in healthy medical students who were grouped according to whether they obtained a high or low score on an Object Sorting Test (OST), on which schizophrenics also obtain high scores. High-OST scoring male students compared to Low-OST scoring male students showed reduced P200 latency. This finding was replicated in a second study of medical students. The authors believe these results support the hypothesis that schizophrenic thought disorder and an equivalent loosening of thinking in nonschizophrenic populations (allusive thinking) have a neurophysiological basis in common, namely a relative weakness of inhibition operating on cortical and subcortical structures.

Adult↗
PubMed1985

Preadult feminine behaviors of male transvestites.

Feminine behaviors during the childhood and adolescence of volunteer male transvestites who had shown a period of fetishism were investigated. The transvestites were categorized into two groups. Twenty who were satisfied with cross-dressing were termed nuclear transvestites, and 14 who desired at least a partial feminization were termed marginal transvestites. It was found that during their preadult years marginal transvestites showed significantly more feminine behaviors than nuclear transvestites, and both transvestite groups reported significantly more feminine behaviors than "normal" controls.

Adult↗
PubMed1985

Expectancy, covert sensitization and imaginal desensitization in compulsive sexuality.

Twenty subjects were randomly allocated to receive either imaginal desensitization (ID) or covert sensitization (CS) to reduce compulsive anomalous sexual behaviours. It was predicted from a behavioural completion model of compulsive urges, that patients' response to ID would be at least as good as their response to CS and would correlate with reduction in their general levels of tension following treatment. These predictions were supported. Correlations between patients' expectancies of treatment success and their response were of moderate strength for expectancy measures taken following the first session of both treatments, but much stronger for expectancy measures following the last session of ID. It was suggested that patients experienced a specific response during the further sessions of ID, which enabled them to improve their prediction of response. As aversive therapies remain the standard behavioural therapy for sexual paraphilias, the finding of the present study that imaginal desensitization without traumatic imagery or aversive physical stimuli is at least as effective would seem to require urgent replication, if only on ethical grounds.

Adult↗
PubMed1983

Sexual orientation and consistency of sexual identity.

The semantic confusion in the use of the terms sexual and gender identity and role is discussed. Theories concerning the development of the sense of sexual identity in normals have been based largely on the sense of sexual identity in sexually deviant subjects. It is suggested that such subjects may have a stronger and more consistent sense of sexual identity than subjects unaware of sexually deviant impulses. Male medical students in two consecutive years anonymously completed a questionnaire concerning their sexual orientation, preference, role, and identity. In both years, students aware of a homosexual component answered the items investigating their sexual identity with greater consistency than did the students unaware of a homosexual component.

Adult↗
PubMed1983

Controlled comparison of aversive therapy and imaginal desensitization in compulsive gambling.

Twenty compulsive gamblers were randomly allocated, half to receive aversion-relief therapy and half to receive imaginal desensitization; both groups were followed-up for one year. Compared with those who received aversion-relief, gamblers who received imaginal desensitization reported a significantly greater reduction of gambling urge and behaviour; they also showed a significant reduction in trait anxiety at one year and in state anxiety at one month and one year following treatment. A high level of state anxiety at one month following treatment predicted failure to respond to treatment at one year in the subjects who received imaginal desensitization, but not in those who received aversion-relief. The relationship between reduction in anxiety and in gambling urge in response to imaginal desensitization was predicted from the theory that compulsive gambling is driven by aversive tension.

Adult↗
PubMed1983

Agoraphobia, compulsive behaviours and behaviour completion mechanisms.

Anxiety is identified with a state of high arousal. Agoraphobia is differentiated from specific phobias which are inherent responses to situations which threatened primitive man. In agoraphobia, attacks of high arousal are produced by situations which delay ongoing activity. It is hypothesised that such delays produce arousal by activating behaviour completion mechanisms. Evidence is reviewed which indicates desensitization has a lasting effect in agoraphobia but not in specific phobias. It is suggested that desensitization reduces the arousal produced by behaviour completion mechanisms. Aversive therapy in homosexuality reduces the subjects' drive to carry out compulsive sexual behaviours but does not alter sexual orientation. It is suggested that compulsive sexual behaviours are not activated by primary sexual drives but by behaviour completion mechanisms which are also responsible for other compulsive behaviours. Aversive therapy acts by reducing the arousal produced by the behaviour completion mechanisms. As both aversive therapy and desensitization reduce such arousal, desensitization should be able to replace aversive therapy in the treatment of compulsive behaviours.

Agoraphobia↗
PubMed1982

Bisexual feelings and opposite-sex behavior in male Malaysian medical students.

The sexual identity of 65 Malaysian male medical students was investigated by anonymous questionnaire. Of these students, 40% were aware of homosexual feelings prior to age 15 years, and 16% were so aware currently. There were correlations between current homosexual feelings and feminine sex dimorphic behavior during childhood and between current homosexual feelings and feminine gender identity. The results are discussed in light of results of a similar questionnaire completed by 138 male medical students in Sydney, Australia.

Adolescent↗
PubMed1980

A pair of monozygotic twins discordant for homosexuality: sex-dimorphic behavior and penile volume responses.

In reports of identical twins discordant for homosexuality, the homosexual twins showed the effeminacy syndrome in childhood. This has been considered evidence that the homosexuality comes from the twin himself. The possibility that the heterosexual twin was denying homosexuality has never been excluded. A pair of identical male twins discordant for homosexuality are reported. They showed significant differences in their penile volume responses to moving pictures of male and female nudes indicative of sexual orientations consistent with their statements. The homosexual twin showed the effeminacy syndrome. Aspects of the syndrome can be induced in mammals by altering their hormonal environment during some critical period in their intrauterine development. Discordance for homosexuality in identical twins could be due to one's being exposed to a different hormonal level during such a critical period.

Adult↗
PubMed1980

Auditory hallucinations and the Verbal Transformation Effect.

In an attempt to replicate findings reported by Slade (1976), 12 hallucinating and 12 non-hallucinating shcizophrenic subjects were compared on tests of verbal ability, personality and mental imagery variables and the Verbal Transformation Effect. No significant differences between the groups was demonstrated. When the data from both groups of schizophrenics were combined, a significant correlation was found between 2 measures of the Verbal Transformation Effect and the P-score of the Eysenck Personality Questionnaire.

Adult↗
PubMed1980

Behavior completion mechanisms rather than primary drives maintain behavioral patterns.

Anxiety is identified with a state of high arousal. Agoraphobia is differentiated from specific phobias which are inherent responses to situations which threatened primitive man. In agoraphobia, attacks of high arousal are produced by situations which delay ongoing activity. It is hypothesised that such delays produce arousal by activating behavior completion mechanisms. Evidence is reviewed which indicates desensitization has a specific effect in agoraphobia but not in specific phobias. It is suggested that desensitization reduces the arousal produced by behavior completion mechanisms. -- Aversive therapy in homosexuality reduces the subjects' drive to carry out compulsive sexual behaviors but does not alter sexual orientation. It is suggested that the compulsive sexual behaviors are not activated by primary sexual drive but by behavior completion mechanisms. Aversive therapy reduces the arousal produced by the behavior completion mechanisms. -- A similar mode of action is advanced for desensitization and aversive therapy. Both inhibit arousal by establishing a focal experimental neurosis which results from alternation of excitatory and inhibitory impulses.

Agoraphobia↗