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Abstract

This study was designed to investigate differences in personality type and sex of subjects on critical flicker frequency (CFF) of normal and problem-children from two secondary schools. Students, 20 problem-children and 20 normal children, were tested on critical flicker frequency. Both sexes were equally represented in the two groups. An Arabic version of Lanyon's Psychological Screening Inventory was given. Individuals in the problem group were antisocial in their behaviours and attitudes, extraverted, maladjusted, and had a lot in common with psychiatric patients. A 2-way analysis of variance showed that both sex of subject and type of personality were significantly related to CFF. Boys obtained significantly lower mean CFF than girls and problem-children obtained significantly lower mean CFF than normal children. An interaction of sex of subjects and type of personality with CFF was also found. The results were not as hypothesized and contrary to prior reported findings.

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Critical Flicker Frequency,Personality and Sex of Subjects 1,2

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