ISRAELI HIGH-RISK STUDY - EDITORS INTRODUCTION

The National Institute of Mental Health joint study by the United Stat es and Israel, known as the Israeli High-Risk Study, is a unique long- term followup investigation of children at genetic risk for schizophre nia. We compared the development of psychiatric disorder in two groups of such children, one group raised in kibbutz environments, the other by their own parents. Matched controls were studied as well. The subj ects were evaluated at ages 11, 17, and 26; an extensive battery of co gnitive and clinical tests, as well as psychophysiological and diagnos tic procedures, was used. This issue of the Schizophrenia Bulletin rep orts and summarizes evaluations conducted when the subjects were in th eir early thirties, as well as some previously unreported data obtaine d when the subjects were 17 years old.