All psychotic disorders include delusions as a core symptom. These false beliefs are persistently maintained despite the absence of evidence to support them. Hallucinations are another feature of most psychotic disorders and involve sensations such as hearing voices or seeing objects that others do not perceive. A meta-analysis that included more than 1,500 youth with psychosis found that auditory hallucinations were the most common symptom that these young people struggled with. Psychosis may also include disorganized thinking that impairs communication and disorganized behaviour that interferes with daily living.  For more information on psychosis, see Vol. 14, No. 4 of the Children’s Mental Health Research Quarterly.