More than 10 studies have consistently shown that around one-third of all schizophrenia
incidence may be related to unknown but likely unconfounded environmental factors …

The purpose of this article is to promote research that tests hypotheses of measured gene-
environment interaction (GxE). A GxE occurs when the effect of exposure to an …

Cannabis use is associated with poor outcome in existing schizophrenia and may
precipitate psychosis in individuals with preexisting liability. To investigate the overall effect …

It has become increasingly clear that the simple neurodevelopmental model fails to explain
many aspects of schizophrenia including the timing of the onset, and the nature of the …

This paper gives an overview of environmental risk factors for schizophrenia. The presence
of certain biological and psychosocial factors at certain points in the lifespan has been …

This review starts with a discussion of what is meant by developmental change. It is
concluded that development is an inherently “fuzzy” concept but that it constitutes a useful …

AIMS: To investigate if associations between cannabis use and psychotic symptoms occur
independently, or occur as a consequence of previous—other types of—psychopathology …

This paper describes a research program intended to provide a better understanding of the
influence of several putative risk factors for schizophrenia on child development and …

BACKGROUND Cannabis is one of the most popular recreational drugs. The rates of use
and dosage, based on the levels of active compounds present in street drugs, is thought to …

There is a large literature on the epidemiology of schizophrenia, but a number of key points
are particularly pertinent. The incidence of schizophrenia is highest among males and …