Effects of Habitual Scanning on the Pattern of the Lateralisation of Colour Categorical Perception

摘要

Lateralisation of colour categorical perception has been investigated in a variety of studies, and the pattern of how the colour categorical perception lateralised is still being debated. It is possible that habitual scanning can help with this debate. The purpose of this study was to look into the effect of reading direction on the pattern of colour categorical perception. The study included sixteen right-to-left readers, all native Arabic speakers, 6 females and 10 males, ranging in age from 20 to 34 years old, with a mean age of 28.19 years (SD = 3.97). Lateralisation of colour categorical perception was tested using a target detection task with an eye-movement measure to a fixation point. Each participant’s eye movement timing from target onset to a fixation point was calculated in each hemisphere (left-right) and category (within-between). Anova 2 ways repeated measure was applied. This study did not replicate the pattern of lateralisation colour categorical perception demonstrated by left to right readers. Right to left readers did not support the left hemisphere lateralisation for colour categorical perception. This result raises the question of whether reading direction plays a role in the lateralisation of colour categorical perception.