Impaired discrimination between imagined and performed actions in schizophrenia.
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Impaired discrimination between imagined and performed actions in schizophrenia. / Gawęda, Lukasz; Moritz, Steffen; Kokoszka, Andrzej.
in: PSYCHIAT RES, Jahrgang 195, Nr. 1-2, 1-2, 2012, S. 1-8.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Impaired discrimination between imagined and performed actions in schizophrenia.
AU - Gawęda, Lukasz
AU - Moritz, Steffen
AU - Kokoszka, Andrzej
PY - 2012
Y1 - 2012
N2 - The main aim of the present study was to investigate whether a specific type of source monitoring, namely self-monitoring for actions (differentiation between imagined and performed actions), is disrupted in schizophrenia. Persons diagnosed with schizophrenia (n=32) and healthy participants (n=32) were assessed with an action memory task. Simple actions were presented to the participants either verbally (short instructions) or nonverbally (icons). Some of the items required participants to physically perform the action whereas other actions had to be imagined. In the recognition phase of the study, participants were asked whether an action was previously displayed (verbally or nonverbally), whether it was a new action (not presented before), and if they had performed or imagined the action. In addition, participants were asked how confident they were in their decision. Participants in the group with schizophrenia significantly more often misattributed imagined actions as performed and vice versa and were more convinced about their wrong decision than participants in the control group. Patients revealed worse recognition for both verbal and nonverbal actions. In accordance with prior studies, we found that patients were less confident in their correct answers than healthy subjects. However, no enhanced confidence in incorrect answers was found. There was no observed significant relationship between source misattributions and the severity of psychopathological symptoms. Our findings suggest tentatively general source monitoring deficits in schizophrenia.
AB - The main aim of the present study was to investigate whether a specific type of source monitoring, namely self-monitoring for actions (differentiation between imagined and performed actions), is disrupted in schizophrenia. Persons diagnosed with schizophrenia (n=32) and healthy participants (n=32) were assessed with an action memory task. Simple actions were presented to the participants either verbally (short instructions) or nonverbally (icons). Some of the items required participants to physically perform the action whereas other actions had to be imagined. In the recognition phase of the study, participants were asked whether an action was previously displayed (verbally or nonverbally), whether it was a new action (not presented before), and if they had performed or imagined the action. In addition, participants were asked how confident they were in their decision. Participants in the group with schizophrenia significantly more often misattributed imagined actions as performed and vice versa and were more convinced about their wrong decision than participants in the control group. Patients revealed worse recognition for both verbal and nonverbal actions. In accordance with prior studies, we found that patients were less confident in their correct answers than healthy subjects. However, no enhanced confidence in incorrect answers was found. There was no observed significant relationship between source misattributions and the severity of psychopathological symptoms. Our findings suggest tentatively general source monitoring deficits in schizophrenia.
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Psychiatric Status Rating Scales
KW - Neuropsychological Tests
KW - Analysis of Variance
KW - Schizophrenic Psychology
KW - Recognition (Psychology)
KW - Learning
KW - Cognition Disorders/etiology
KW - Discrimination (Psychology)/physiology
KW - Schizophrenia/complications
KW - Imagination/physiology
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Psychiatric Status Rating Scales
KW - Neuropsychological Tests
KW - Analysis of Variance
KW - Schizophrenic Psychology
KW - Recognition (Psychology)
KW - Learning
KW - Cognition Disorders/etiology
KW - Discrimination (Psychology)/physiology
KW - Schizophrenia/complications
KW - Imagination/physiology
M3 - SCORING: Journal article
VL - 195
SP - 1
EP - 8
JO - PSYCHIAT RES
JF - PSYCHIAT RES
SN - 0165-1781
IS - 1-2
M1 - 1-2
ER -
