IJSSH 2016 Vol.6(2): 113-118 ISSN: 2010-3646
DOI: 10.7763/IJSSH.2016.V6.629

Categorical Perception of Colour is Lateralised to the Left Hemisphere: Evidence from Present-Absent and Pop-out Tasks

Abdulrahman Saud Al-Rasheed
Abstract—Left Hemisphere LH bias in colour Categorical Perception CP has been related to the linguistic nature of the LH and converging evidence to support this hypothesis has been presented. So far all studies have used either the visual search task or the target detection task with most of these tasks involving a spatial decision about whether the target is on the left or the right. Current study extended the investigation to include two other types of tasks. First a search task that varied the number of distractors and second a visual search task with targets only present on half the trials and the task was to decide whether there was a target present or not. Forty native-English-speaking participated in this study. The pattern of LH colour CP was found on both of these tasks. This result has been established that LH colour CP is a solid phenomenon

Index Terms—Left hemisphere, lateralization, categorical perception, visual search task, target detection task.

Abdulrahman Saud Al-Rasheed is with the Department of Psychology, King Saud University, Riyadh, KSA (e-mail: asalrasheed@ksu.edu.sa).

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Cite: Abdulrahman Saud Al-Rasheed, " Categorical Perception of Colour is Lateralised to the Left Hemisphere: Evidence from Present-Absent and Pop-out Tasks," International Journal of Social Science and Humanity vol. 6, no. 2, pp. 113-118, 2016.

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