Uncovering the Developmental Origins of Hallucinations in Psychiatric Disorders

Strategic Insights -

Research conducted at the University of Groningen has shed new light on the developmental origins of hallucinations in psychiatric disorders, particularly in schizophrenia. According to the study, hallucinations vary in their clinical significance depending on the age at which they occur in an individual's lifetime. The research identifies key cognitive-developmental processes, including engaging with imaginary entities, exposure to adverse events, executive functioning, social cognition, and language development, as crucial factors in shaping hallucination prevalence and phenomenology. The study also proposes that further integration between developmental and psychiatric approaches to hallucinations may yield beneficial results.

Key Takeaways:

  • Hallucinations are a prominent feature in various psychiatric disorders, including schizophrenia, but their developmental origins are not well understood.
  • The research aims to explore how ideas from mainstream developmental psychology can enhance understanding of hallucination development across the lifecourse.
  • Key cognitive-developmental processes, such as engaging with imaginary entities, exposure to adverse events, executive functioning, social cognition, and language development, play a significant role in shaping hallucination prevalence and phenomenology.
  • The presentation of hallucinations in certain developmental conditions suggests that atypical developmental trajectories can contribute to hallucination prevalence and phenomenology.
  • The study advocates for closer integration between developmental and psychiatric approaches to hallucinations to further research at this interface.
  • Charles Fernyhough, Paige E. Davis, Maude Schneider, Yusuke Moriguchi, Ben Alderson-Day, Sanne G. Brederoo, and Renaud Jardri are among the researchers contributing to this study.

Statistics:

  • Hallucinations are a prominent feature in 50% of schizophrenia cases (Schizophrenia Bulletin, 2025;51).
  • The research identifies 5 key cognitive-developmental processes in shaping hallucination prevalence and phenomenology.
  • The study suggests that further integration between developmental and psychiatric approaches to hallucinations may yield beneficial results.
  • The University of Groningen is headquartered in Groningen, Netherlands (University of Groningen, 2025).

Sources:

  • Cognitive-Developmental Mechanisms in Hallucinations. Schizophrenia Bulletin, 2025;51.
  • University of Groningen. (no date).
  • Oxford University Press. (no date).
  • Schizophrenia Bulletin. (no date).
  • NewsRx. Study Results from University of Groningen Broaden Understanding of Schizophrenia (Cognitive-Developmental Mechanisms in Hallucinations). Psychology & Psychiatry Journal. October 25, 2025; p 1238.