Abstract
Objective: Hearing impairment (HI) is presumed to influence the visual skills of affected children, possibly biasing their performance on tests requiring visual analyzing skills. We investigated whether such a bias would occur on Raven’s Coloured Progressive Matrices (CPM); a set of three subtests (labeled A, AB and B) for measurement of non-verbal intelligence. Method: A sample of 62 children presenting with various degrees of HI were administered the test. Raw scores were controlled for age, and correlated to degree of HI. Results: The correlation between degree of HI and overall test score missed significance ( r=0.23, P=0.07), but scores from subtest B showed a significant positive correlation with HI ( r=0.37, P=0.003). Conclusions: We conclude that severe or profound HI may lead to increased competence for task solution on subtest B. However, despite the biasing effect on this subtest, the CPM overall test score is only slightly affected.
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