Regional differences in obsessionality and obsessional neurosis

Normative studies with the Scale for Interpersonal Behaviour (SIB): II. US students. A cross-cultural comparison with Dutch data

The Scale for Interpersonal Behaviour (SIB), a multidimensional, self-report measure of state assertiveness, was administered to a nationwide sample of 2375 undergraduates enrolled at 11 colleges and universities across the USA. The SIB was developed in the Netherlands for the independent assessment of both distress associated with self-assertion in a variety of social situations and the likelihood of engaging in a specific assertive response. This is done with four factorially-derived, first-order dimensions: (i) Display of negative feelings (Negative assertion); (ii) Expression of and dealing with personal limitations; (iii) Initiating assertiveness; and (iv) Praising others and the ability to deal with compliments/praise of others (Positive assertion). The present study was designed to determine the cross-national invariance of the original Dutch factors and the construct validity of the corresponding dimensions. It also set out to develop norms for a nationwide sample of US students. The results provide further support for the reliability, factorial and construct validity of the SIB. Compared to their Dutch equivalents, US students had meaningfully higher distress in assertiveness scores on all SIB scales (medium to large effect sizes), whereas differences on the performance scales reflected small effect sizes. The cross-national differences in distress scores were hypothesized to have originated from the American culture being more socially demanding with respect to interpersonal competence than the Dutch, and from the perceived threats and related cognitive appraisals that are associated with such demands.

Alcoholism diagnosis and Celtic names

Objective: To investigate assertions that Celts have higher rates of alcoholism and mental illness than non-Celts.

Method: The records of 3,000 admissions to Northwick Park Hospital Psychiatric Unit, Harrow (a North West London suburban middle class borough research hospital with a strictly defined catchment area – the London Borough of Harrow: population 200,000), from June 1987 for three years under the clinical care of four consultant psychiatrists, were examined.

Results: There were 683 with non-Celtic names and 175 with Celtic names (16.7%) (data on 10 patients incomplete). 306 (35%) of non-Celts and 88 (50%) of Celts were aged under 40 years. Alcohol dependence (ICD 303) was significantly commoner (p<0.001) among the Celts (35.3%) than among the non-Celts (12.9%). There were highly significant excesses (p<0.001) of native-born Celts with ICD 303 (54%) compared with non-Celts 12.9% or with Celts born outside Celtdom (23%). Patients with Norman names tended to follow the Celts in these respects. There were no differences with respect to the prevalence of psychosis or other ICD categories among Celts and non-Celts.

Conclusion: Doctors should be aware of the high prevalence of alcoholic dependence among people with Celtic names, whether these were born in Celtic countries or not, entertain a high index of diagnostic suspicion and take preventative measures accordingly. However, we found no excess of other categories of psychiatric disorder among Celts as compared with non-Celts. Patients with Norman-derived names seemed to follow the Celts in these respects.

Parents of patients with obsessive-compulsive disorder

Family histories obtained from 27 patients with obsessive-compulsive disorder failed to find a single parent with the disorder. To augment the family history data the Leyton Obsessional Inventory was completed by a subset of 10 patients and by their 20 parents. Although as a group parents showed lower Leyton Obsessional Inventory symptom scores than their obsessional offspring, 3 parents who had not been identified by family history were distinguished by high symptom scores in the absence of significant resistance or interference.