Abstract
Facial expressions are evolutionarily acquired social signals that are processed rapidly by the receiver when deciding to either approach or avoid the person sending the signal. The predominance of the approach or avoidance responses has been examined for various facial expressions. Similar to facial expressions, the approach-avoidance response to affective voice may have been acquired evolutionarily. However, studies examining approach-avoidance to an affective voice are limited. This study used the approach-avoidance task framework developed for facial expressions to determine the dominant behavioural responses to affective voices that indicate either happiness or anger. The results show that the approach response was dominant for the happy voice, while the avoidance response was dominant for the angry voice. This tendency was observed even without the presence of any facial stimuli. These results suggest that an affective voice may be an evolutionarily acquired approach-avoidance-inducing social signal, similar to facial expressions.
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