Bjørn Jacobsen

TL;DR: This study and its confirmation of previous results in the Copenhagen Study speak for a syndrome that can be reliably recognized in which genetic factors play a significant etiologic role: observed familial clustering in schizophrenia is an expression of shared genetic factors.

TL;DR: A significant aggregation of schizophrenia and other nonaffective, nonorganic psychosis and Cluster A personality disorders occurred among the offspring of schizophrenic mothers compared with the controls and no evidence of increased aggregation of (psychotic and nonpsychotic) affective disorders was noted among the children of schizophrenics.

TL;DR: Teachers' ratings were particularly useful in predicting clinical and psychiatric outcomes 10 and 25 years later, and within this low-risk group, teachers were able to predict which students would develop psychotic disorders.

TL;DR: In this article, a sample of 5483 adults who had been legally adopted early in life by persons not biologically related to them, 33 were identified, from mental hospital records, for whom a diagnosis of definite schizophrenia (chronic, latent, or acute) could be agreed upon by four raters.

TL;DR: Results suggest that the elevated TDI scores in the relatives of persons with schizophrenia reflect the operation of genes increasing the liability for schizophrenia, rather than the rearing experiences that were shared in common with schizophrenic probands.