ISSN : 1226-9654
According to the psychological construction theory of emotion, labeling an affect promotes the construction of the conceptual representation of facial expressions (Lindquist, MacCormack & Shablack, 2015). In the present study, we investigated the effect of emotion labels on the categorical judgment of emotion of facial stimuli using a psychophysical method. We also tried to compare two conditions under which labels were read aloud or silently to see if the auditory feedback accompanying the utterance would increase the effect. During the experiment, one of three words ('Happiness', 'Anger', and 'Mass') was presented and participants read aloud the word if it was underlined. Then, a target face, randomly chosen from 6 gradually morphed faces from Happy to Angry, was presented for a two-alternative forced choice task ('Happy' or 'Angry'). Using a psychometric function, points of subjective equality (PSEs) of participants were estimated and statistically analyzed. Compared with the non-emotional word, reading an emotional word, 'Happiness' or 'Anger', significantly changed the PSE. Moreover, when the word 'Happiness' was read aloud, the PSE was further biased to Happy. By demonstrating emotion labels change the perceptual category boundary of facial emotion, current results support the claims of Lindquist et al.(2015) that language has an important role in the process of constructing emotion.
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