期刊
PERSONALITY AND INDIVIDUAL DIFFERENCES
卷 76, 期 -, 页码 68-74出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.paid.2014.11.059
关键词
Impulsivity; Laboratory measures; Factor analysis; Reflection impulsivity; Motor impulsivity; Inhibitory control; Temporal impulsivity; Human
资金
- Alcohol Research UK
- Medical Research Council Project Grant [G0802642]
- University of Sussex
- MRC [G0802642] Funding Source: UKRI
- Medical Research Council [G0802642] Funding Source: researchfish
'Impulsivity' refers to a range of behaviours including preference for immediate reward (temporal-impulsivity) and the tendency to make premature decisions (reflection-impulsivity) and responses (motor-impulsivity). The current study aimed to examine how different behavioural and self-report measurements of impulsivity can be categorised into distinct subtypes. Exploratory factor analysis using full information maximum likelihood was conducted on 10 behavioural and 1 self-report measure of impulsivity. Four factors of impulsivity were indicated, with Factor 1 having a high loading of the Stop Signal Task, which measures motor-impulsivity, factor 2 representing reflection-impulsivity with loadings of the Information Sampling Task and Matching Familiar Figures Task, factor 3 representing the Immediate Memory Task, and finally factor 4 which represents the Delay Discounting Questionnaire and The Monetary Choice Questionnaire, measurements of temporal-impulsivity. These findings indicated that impulsivity is not a unitary construct, and instead represents a series of independent subtypes. There was evidence of a distinct reflection-impulsivity factor, providing the first factor analysis support for this subtype. There was also support for additional factors of motor- and temporal-impulsivity. The present findings indicated that a number of currently accepted tasks cannot be considered as indexing motor- and temporal-impulsivity suggesting that additional characterisations of impulsivity may be required. (C) 2014 Elsevier Ltd. All rights reserved.
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