[The Brodsky & Brodsky risk factor model of schizophrenia--an empirical contribution]

In the year 1981 the Canadian psychologists Patricia & Marvin Brodsky published an article about a model integrating risk variables involved in the development of Schizophrenia which is very important but not very well known in the German speaking countries. This model which describes essentially the interaction of four risk variables, such as mental health of the mother, neonatal status, temperament and mothering style, shall be published for the interested reader on the one hand. On the other hand the consequences of the risk variable "mothering style" should be empirically examined in a retrospective study. With a standardized interview containing all essential variables of Brodsky's risk model 73 patients suffering in schizophrenia and being inpatient in the Rheinische Landesklinik Bonn were examined and the interview data were evaluated with regard to the contents in contrast to a control group of 26 healthy persons. With regard to the "schizophrenia spectrum" the portion of so called "superphrenics" (defined as "artistically and muscially gifted offspring with a schziophrenic mother" was not significantly increased in the schizophrenic sample (17.8% vs 7.7%) but the comparison of mothering style (empathic contingent vs. non-empathic and non-contingent) revealed a statistically significant difference between the groups. Finally the data of the risk variable "mothering style" are discussed in the light of the Brodsky-model and it is pointed at the special problems in reliable and valid opertionalisation and assessment of the risk variables.