Journal of behavior therapy and experimental psychiatry · 2016
The relationship between cognitive biases and psychological dimensions of delusions: The importance of jumping to conclusions.
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Gawęda Łukasz, Staszkiewicz Marta, Balzan Ryan P
Аннотация
BACKGROUND AND OBJECTIVES: Cognitive biases play a role in the development and maintenance of delusions. However, delusions are multidimensional (i.e., emotional and cognitive facets) and often co-occur with auditory hallucinations. Therefore, further refinement of the precise relationship between cognitive biases, delusions, and hallucinatory experiences is warranted.
METHODS: A total sample of 167 patients with schizophrenia spectrum disorders was split into two groups consisting of patients with active delusions (n = 127) and active hallucinations (n = 92). All patients were assessed for delusions and hallucinations using the semi-structured psychotic symptom rating scales (PSYRATS), which assesses the emotional (i.e., distress) and cognitive (i.e., conviction, preoccupation) dimensions of these symptoms. Cognitive biases were assessed with the Cognitive Biases Questionnaire for Psychosis (CBQp) self-report questionnaire (assessing jumping to conclusions, intentionalising, catastrophising, emotional reasoning, and dichotomous thinking biases). Multiple stepwise regressions were performed to investigate the relationship between delusions and cognitive biases, while controlling for auditory hallucinations (and vice-versa).
RESULTS: The only cognitive bias to significantly predict delusions after controlling for the severity of auditory hallucinations was the jumping to conclusions (JTC) bias (predicted both emotional and cognitive dimensions). Only the emotional dimension of auditory hallucinations was predicted by the intentionalising and dichotomous thinking biases, after delusional severity was controlled for.
LIMITATIONS: The cross-sectional design precludes causal inferences. Only positive psychotic symptoms were assessed and no wider psychopathology assessment was utilised (e.g., negative symptoms, anxiety, depression).
CONCLUSIONS: The jumping to conclusions bias is associated with both delusional conviction and emotional distress.
METHODS: A total sample of 167 patients with schizophrenia spectrum disorders was split into two groups consisting of patients with active delusions (n = 127) and active hallucinations (n = 92). All patients were assessed for delusions and hallucinations using the semi-structured psychotic symptom rating scales (PSYRATS), which assesses the emotional (i.e., distress) and cognitive (i.e., conviction, preoccupation) dimensions of these symptoms. Cognitive biases were assessed with the Cognitive Biases Questionnaire for Psychosis (CBQp) self-report questionnaire (assessing jumping to conclusions, intentionalising, catastrophising, emotional reasoning, and dichotomous thinking biases). Multiple stepwise regressions were performed to investigate the relationship between delusions and cognitive biases, while controlling for auditory hallucinations (and vice-versa).
RESULTS: The only cognitive bias to significantly predict delusions after controlling for the severity of auditory hallucinations was the jumping to conclusions (JTC) bias (predicted both emotional and cognitive dimensions). Only the emotional dimension of auditory hallucinations was predicted by the intentionalising and dichotomous thinking biases, after delusional severity was controlled for.
LIMITATIONS: The cross-sectional design precludes causal inferences. Only positive psychotic symptoms were assessed and no wider psychopathology assessment was utilised (e.g., negative symptoms, anxiety, depression).
CONCLUSIONS: The jumping to conclusions bias is associated with both delusional conviction and emotional distress.