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ERIC Number: EJ821842
Record Type: Journal
Publication Date: 2009
Pages: 5
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-0160-2896
Reversing the Speed-IQ Correlation: Intra-Individual Variability and Attentional Control in the Inspection Time Paradigm
Fox, Mark C.; Roring, Roy W.; Mitchum, Ainsley L.
Intelligence, v37 n1 p76-80 Jan-Feb 2009
Elementary cognitive tasks (ECTs) are simple tasks involving basic cognitive processes for which speed of performance typically correlates with IQ. Inspection time (IT) has the strongest IQ correlations and is considered critical evidence for neural speed underlying individual differences in intelligence. However, results from Bors et al. [Bors, D.A., Stokes, T.L., Forrin, B. & Hodder, S.L., (1999). "Inspection Time and Intelligence: Practice, strategies, and attention." "Intelligence," 27, 111-129.] suggest task consistency may underlie this shared variance. One possibility is that performance consistency reflects attentional mechanisms, as previous research has shown relationships between attentional control and cognitive performance. In study 1, participants were administered the Raven's Advanced Progressive Matrices and performed an alternative version of the IT task to measure individual trial-by-trial consistency expressed as the standard deviation of IT (ITSD). The alternative procedure yielded IT-IQ correlations similar to those obtained in previous studies and ITSD accounted for the IT-IQ variance. A second experiment tested whether ITSD measures attentional control, as participants simultaneously performed the IT task and an attention-demanding verbalization task. Under these conditions, high IQ participants performed worse on IT. These results suggest IT performance may reflect individual differences in attentional control and that this variable may account for the variance shared between IT and IQ. (Contains 2 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Raven Advanced Progressive Matrices