Abstract
Recent fMRI and TMS studies on idiom comprehension have shown that the prefrontal cortex is involved in idiom processing. Since schizophrenic patients exhibit prefrontal structural changes and dysexecutive behavioural deficits, we hypothesised an impairment in idiom comprehension, correlating with performance on executive tasks. In this study, idiom comprehension was evaluated by means of a sentence-to-picture-matching task in 45 schizophrenic patients and 45 control subjects, matched for age and educational level. The task included 62 idiomatic and 62 literal sentences. Participants were presented with a written sentence, either literal or idiomatic, followed by a picture, which appeared below the sentence. They were instructed to judge whether the picture represented the meaning of the sentence or not, and responded by pressing one of two response keys. Half of the items correctly represented the meaning, half did not. Reaction times and accuracy were measured. Schizophrenics were impaired in both types of idiomatic sentence. However, their performance was particularly poor in the case of ambiguous idioms. Wisconsin Card Sorting Test and Digit Sequencing were the unique predictors of performance for idiom comprehension in general, while thought disorganization was not. Cognitive decline either did not appear to predict performance.
| Original language | English |
|---|---|
| Pages (from-to) | 1032-1040 |
| Number of pages | 9 |
| Journal | Neuropsychologia |
| Volume | 48 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Mar 2010 |
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Keywords
- Executive functions
- Idioms
- Schizophrenia
ASJC Scopus subject areas
- Behavioral Neuroscience
- Cognitive Neuroscience
- Experimental and Cognitive Psychology
Cite this
The comprehension of idiomatic expressions in schizophrenic patients. / Schettino, Antonio; Lauro, Leonor Romero; Crippa, Franca; Anselmetti, Simona; Cavallaro, Roberto; Papagno, Costanza.
In: Neuropsychologia, Vol. 48, No. 4, 03.2010, p. 1032-1040.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The comprehension of idiomatic expressions in schizophrenic patients
AU - Schettino, Antonio
AU - Lauro, Leonor Romero
AU - Crippa, Franca
AU - Anselmetti, Simona
AU - Cavallaro, Roberto
AU - Papagno, Costanza
PY - 2010/3
Y1 - 2010/3
N2 - Recent fMRI and TMS studies on idiom comprehension have shown that the prefrontal cortex is involved in idiom processing. Since schizophrenic patients exhibit prefrontal structural changes and dysexecutive behavioural deficits, we hypothesised an impairment in idiom comprehension, correlating with performance on executive tasks. In this study, idiom comprehension was evaluated by means of a sentence-to-picture-matching task in 45 schizophrenic patients and 45 control subjects, matched for age and educational level. The task included 62 idiomatic and 62 literal sentences. Participants were presented with a written sentence, either literal or idiomatic, followed by a picture, which appeared below the sentence. They were instructed to judge whether the picture represented the meaning of the sentence or not, and responded by pressing one of two response keys. Half of the items correctly represented the meaning, half did not. Reaction times and accuracy were measured. Schizophrenics were impaired in both types of idiomatic sentence. However, their performance was particularly poor in the case of ambiguous idioms. Wisconsin Card Sorting Test and Digit Sequencing were the unique predictors of performance for idiom comprehension in general, while thought disorganization was not. Cognitive decline either did not appear to predict performance.
AB - Recent fMRI and TMS studies on idiom comprehension have shown that the prefrontal cortex is involved in idiom processing. Since schizophrenic patients exhibit prefrontal structural changes and dysexecutive behavioural deficits, we hypothesised an impairment in idiom comprehension, correlating with performance on executive tasks. In this study, idiom comprehension was evaluated by means of a sentence-to-picture-matching task in 45 schizophrenic patients and 45 control subjects, matched for age and educational level. The task included 62 idiomatic and 62 literal sentences. Participants were presented with a written sentence, either literal or idiomatic, followed by a picture, which appeared below the sentence. They were instructed to judge whether the picture represented the meaning of the sentence or not, and responded by pressing one of two response keys. Half of the items correctly represented the meaning, half did not. Reaction times and accuracy were measured. Schizophrenics were impaired in both types of idiomatic sentence. However, their performance was particularly poor in the case of ambiguous idioms. Wisconsin Card Sorting Test and Digit Sequencing were the unique predictors of performance for idiom comprehension in general, while thought disorganization was not. Cognitive decline either did not appear to predict performance.
KW - Executive functions
KW - Idioms
KW - Schizophrenia
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U2 - 10.1016/j.neuropsychologia.2009.11.030
DO - 10.1016/j.neuropsychologia.2009.11.030
M3 - Article
VL - 48
SP - 1032
EP - 1040
JO - Neuropsychologia
JF - Neuropsychologia
SN - 0028-3932
IS - 4
ER -