The Study
The aim of the study was to investigate whether a newly
developed reasoning training module induces changes in
data gathering in peoplewith a diagnosis of schizophreniaspectrumdisorder
and current delusions. A secondary aim
was to explore whether improvements in reasoning would
lead to improvements in flexibility in thinking about delusions.
It was hypothesized that
1. Individuals with delusions will request less information
than individuals without delusions on probabilistic
reasoning tasks (ie, will ‘‘JTC’’).
2. Individuals with delusions who receive brief reasoning
training will show improvement on general reasoning
as measured by the probabilistic reasoning task (data
gathering) compared with individuals with delusions
who receive no reasoning training.
3. Reasoning training will lead to greater belief flexibility
associated with the delusion as assessed by asking
about the possibility of being mistaken, the response
to hypothetical contradiction, and the production of
alternative explanations.