ERIC Number: EJ778714
Record Type: Journal
Publication Date: 2002-Sep
Reference Count: 0
A Cognitive Complexity Metric Applied to Cognitive Development
Andrews, Glenda; Halford, Graeme S.
Cognitive Psychology, v45 n2 p153-219 Sep 2002
Two experiments tested predictions from a theory in which processing load depends on relational complexity (RC), the number of variables related in a single decision. Tasks from six domains (transitivity, hierarchical classification, class inclusion, cardinality, relative-clause sentence comprehension, and hypothesis testing) were administered to children aged 3-8 years. Complexity analyses indicated that the domains entailed ternary relations (three variables). Simpler binary-relation (two variables) items were included for each domain. Thus RC was manipulated with other factors tightly controlled. Results indicated that (i) ternary-relation items were more difficult than comparable binary-relation items, (ii) the RC manipulation was sensitive to age-related changes, (iii) ternary relations were processed at a median age of 5 years, (iv) cross-task correlations were positive, with all tasks loading on a single factor (RC), (v) RC factor scores accounted for 80% (88%) of age-related variance in fluid intelligence (compositionality of sets), (vi) binary- and ternary-relation items formed separate complexity classes, and (vii) the RC approach to defining cognitive complexity is applicable to different content domains.
Descriptors: Sentences, Age Differences, Hypothesis Testing, Factor Analysis, Cognitive Development, Measurement Techniques, Measures (Individuals), Prediction, Cognitive Processes, Classification, Young Children, Comprehension, Correlation
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Sponsor: Australian Research Council.
Authoring Institution: N/A