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Psychotic symptoms in the general population

Surveys of unselected general population samples have shown that a large number of individuals report any experience resembling the clinical psychosis concept. The Internet can be an effective medium for collection of such epidemiological large-scale psychology- and psychiatry-related data.

Project description

The main questions are:

  • What is the co-morbidity between sub-clinical positive psychotic symptoms and depression, the relationship to season of birth and complications around childbirth?
  • Is it possible to ask for positive psychotic symptoms in a web-based questionnaire in the general population?

Project leader

Christina Hultman

Main financing: Karolinska Institutet Funds (KI fonder); Swedish Research Council for Working Life and Social Research


Institute of Public Health, Helsinki: Sebastian Therman