Coren S, Porac C, 1979, "Heritability in visual-geometric illusions: a family study" Perception 8(3) 303 – 309
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Heritability in visual-geometric illusions: a family study
Stanley Coren, Clare Porac
Received 20 November 1978, in revised form 12 February 1979
Abstract. The Müller - Lyer and Ebbinghaus illusions were tested in 203 mother - father - offspring triads and 303 sibling pairs. Significant familial resemblances were found in all but the overestimated segment of the Ebbinghaus illusion. These results suggest that responses to visual-geometric illusions, mediated by optical or neural interactive mechanisms, show patterns of familial resemblance which may be based upon heritable factors.
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