Early Detection-An Important Screening
Autistic adults face an increased risk of experiencing psychosis. However, identifying attenuated psychotic symptoms-the preliminary stage of psychosis-can be challenging, partly due to overlapping characteristics of Autism and the lack of effective screening tools for this population. A new study examined the effectiveness of the PQ-16 (Prodromal Questionnaire-16) as a screening tool for identifying these symptoms.
What Was Examined and What Was Found?
The study, published in Schizophr Bull on August 20, 2026, used data from a large national database: the Dutch Autism Register. Researchers analyzed participants' self-reports regarding symptoms and distress related to the PQ-16 questionnaire, and also examined demographic variables, age of Autism diagnosis, severity of autistic traits, and depressive symptoms. Among 1686 autistic adults included in the study, 34.1% reported a score above the PQ-16 cutoff (6 points or more). This data indicates a significantly higher prevalence of attenuated psychotic symptoms among autistic adults compared to the general population.
The findings showed that higher PQ-16 scores were independently associated with greater severity of autistic traits and depressive symptoms. In a follow-up analysis, 1.4% of participants were diagnosed with new diagnoses on the schizophrenic spectrum. It is important to note that all these new diagnoses-5 out of 361 participants with follow-up data-occurred exclusively among participants who crossed the PQ-16 cutoff at the beginning of the study.
Significance of Findings and Limitations
The study's findings suggest that the PQ-16 questionnaire can help identify relevant patterns of attenuated psychotic symptoms in autistic adults. It supports the idea of a brief screening as part of a two-stage assessment approach, which can identify individuals at increased risk. However, the findings regarding the questionnaire's predictive ability should be interpreted with caution, as the number of new diagnoses was very small. This limitation indicates the need for further studies with a larger number of cases to confirm the predictive ability.
For autistic adults in Israel, this study highlights the importance of awareness of the increased risk for attenuated psychotic symptoms, and the potential of a simple screening tool to aid in early detection. Early detection can enable more appropriate and timely support, thereby improving quality of life.