The familial transmission of bipolar illness.

As part of the National Institute of Mental Health Collaborative Program on the Psychobiology of Depression study, data were collected on 2225 first-degree relatives of 612 probands. We analyzed 187 families of bipolar patients (149 probands with a diagnosis of bipolar I disorder and 38 with a diagnosis of schizoaffective, manic subtype). Using traditional genetic methods, the morbid risk of bipolar illness in relatives was found to be 5.

Schizo-affective disorders: bipolar-unipolar subtyping. Natural history variables: a discriminant analysis approach.

In view of tackling the problem of heterogeneity among the schizo-affectives, methods of univariate and multivariate statistical analysis (canonical discriminant analysis) were applied to the sociodemographic and natural history variables of four groups of affective disorder patients from the NIMH Collaborative Study on the Psychobiology of Depression Clinical section: the schizo-bipolar (SBP, n = 45), the schizo-unipolar (SUP, n = 30), the bipolar I (BP, n = 159) and the primary unipolar depressed (UP, n = 387) defined by Research Diagnostic Criteria. Two dimensions were identified among the four groups of 'affective' patients: the 'bipolar' and the 'schizophrenic' dimensions. They provided highly significant discrimination among the means of the four groups but were not very accurate in predicting group membership.

The bereaved child: variables influencing early psychopathology.

This is a 13-month follow-up study of 105 two to 17 year-old children bereaved of one parent, with 85 controls. Data were gathered on physical and mental health in the children and surviving parents, the child's sex and age and the bereaved parent's sex and psychopathology being included as risk factors. Dysphoria, falling school performance and withdrawn behaviour were significantly increased in bereaved children of both sexes at all ages, while temper tantrums, bedwetting and the depressive syndrome only increased in the age and sex categories normally associated with these conditions.

The reliability of retrospective treatment reports.

High levels of agreement are reported for retrospective assessment of treatment history using the Longitudinal Interval Followup Evaluation Baseline (LIFE Base), a recently developed structured psychiatric interview, in a sample of 47 subjects with a moderate to severe affective disorder. In a paired rater/observer design with interviews conducted at five different research centers, most coefficients of reliability (Kappa) were above 0.91.

The bereaved child.

This is a one-year prospective study of one hundred and five 2 to 17 year old children of a consecutive sample of young widows and widowers in the community and of the children of controls. The children's reactions to the parental death were recorded at one month and thirteen months after the event in a structured interview with the surviving parent. The interview included items of general adaption to the death, school performance, behaviour problems, symptoms relevant to psychopathological manifestations (depression, anxiety, etc.