Intellectual factors in false memories of patients with schizophrenia. (July 2018)

• Record Type: Journal Article
• Authors: Zhu, Bi; Chen, Chuansheng; Loftus, Elizabeth F.; Dong, Qi; Lin, Chongde; Li, Jun
• Is Part Of: Psychiatry research. Volume 265(2018)
• Page Start: 256
• Page End: 262
• Publication Date: 2018-07
• Subjects: False memory -- Visual scenes -- Schizophrenia -- Intelligence -- Recognition; Psychiatry -- Periodicals; Psychiatry -- periodicals; Psychiatrie -- Périodiques; 616.89
• DOI: 10.1016/j.psychres.2018.05.007
• Languages: English
• ISSNs: 0165-1781

Abstract

Highlights: IQ had a negative correlation with false recognition in patients with schizophrenia. IQ had a positive correlation with high-confidence true recognition in patients. IQ had positive correlations with discrimination rates in patients. Performance IQ had a negative correlation with false recognition in patients. Verbal IQ had a positive correlation with true recognition in patients. Abstract: The current study explored the intellectual factors in false memories of 139 patients with schizophrenia, using a recognition task and an IQ test. The full-scale IQ score of the participants ranged from 57 to 144 (M = 100, SD = 14). The full IQ score had a negative correlation with false recognition in patients with schizophrenia, and positive correlations with high-confidence true recognition and discrimination rates. Further analyses with the subtests' scores revealed that false recognition was negatively correlated with scores of performance IQ (and one of its subtests: picture arrangement), whereas true recognition was positively correlated with scores of verbal IQ (and two of its subtests: information and digit span). High-IQ patients had less false recognition (overall or high-confidence false recognition), more high-confidence true recognition, and higher discrimination abilities than those with low IQ. These findings contribute to a better understanding of the cognitive mechanism in false memory of patients with schizophrenia, and are of practical relevance to the evaluation of memory reliability in patients with different intellectual levels.