[Qualitative research approaches in practical use in child and adolescent psychiatry].

Experimental study designs and quantitative analysis are dominating the methodology of child psychiatric research. Sometimes the "box of tools" consisting of standardized software packages for statistical analysis seems to lead to a regrettable uniformity in research strategies. Elaborated sociological research concepts in the tradition of Max Weber and the "Chicago school" could close the scientific gap between quantitative studies on large samples and simple case-reports. They are excellent instruments for generating hypothesis on relatively rare clinical problems or in new fields of child psychiatric research. Based on a review of the literature potential applications of qualitative methodology in child psychiatry will be discussed.