According to which of the following researchers do facial expressions serve to communicate social motives to others?

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Fridlund's socio-functional approach to facial expressions posits that facial expressions serve to communicate social motives or intentions to others, such as aggression, friendliness, or submission. Ekman, Izard, and James all made significant contributions to the study of facial expressions, but did not specifically focus on their social function in the same way that Fridlund did.

According to Which of the Following Researchers Do Facial Expressions