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Assessment of Introversion-Extraversion in Children: Brief Report

1974; SAGE Publishing; Volume: 38; Issue: 2 Linguagem: Inglês

10.2466/pms.1974.38.2.429

1558-688X

Elizabeth E. Medeiros, Donald L. McManis,

Cognitive and developmental aspects of mathematical skills

An attempt to replicate the results of Casey and McManis (1971), showing that high-extravert children salivated significantly less to lemon juice than did low-extravert children, produced negative results. Although group differences were in the predicted direction, the differences were nonsignificant, with the differences more marked for 18 girls than for 18 boys. A visual vigilance task also failed to produce significantly fewer correct responses by high-extravert children than by low-extravert children, as predicted by Eysenck's formulation. For speed and accuracy of motor movement, the prediction of faster but less accurate performance by high extraverts than by low extraverts was confirmed, although the results were significant only for the boys.