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Durham University



Publication details for Dr Niklas Ihssen

Humpston, Clara S., Evans, Lisa H., Teufel, Christoph, Ihssen, Niklas & Linden, David E. J. (2017). Evidence of absence: no relationship between behaviourally measured prediction error response and schizotypy. Cognitive Neuropsychiatry 22(5): 373-390.

Author(s) from Durham


Introduction: The predictive processing framework has attracted
much interest in the field of schizophrenia research in recent
years, with an increasing number of studies also carried out in
healthy individuals with nonclinical psychosis-like experiences. The
current research adopted a continuum approach to psychosis and
aimed to investigate different types of prediction error responses
in relation to psychometrically defined schizotypy.
Methods: One hundred and two healthy volunteers underwent a
battery of behavioural tasks including (a) a force-matching task,
(b) a Kamin blocking task, and (c) a reversal learning task together
with three questionnaires measuring domains of schizotypy from
different approaches.
Results: Neither frequentist nor Bayesian statistical methods
supported the notion that alterations in prediction error responses
were related to schizotypal traits in any of the three tasks.
Conclusions: These null results suggest that deficits in predictive
processing associated with clinical states of psychosis are not
always present in healthy individuals with schizotypal traits.

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