What do facial expressions primarily serve as in communication?

Facial expressions primarily serve as visual cues reflecting a speaker's emotions. This is crucial in communication, as they convey feelings and attitudes that may not be expressed in words. For instance, a smile can indicate happiness or friendliness, while a frown can convey sadness or disapproval. These non-verbal cues enhance understanding between individuals, allowing the receiver to interpret the speaker’s emotional state, intent, or context of the message being communicated.

In contrast, while indicators of knowledge relate to what a person knows or understands, they do not encompass the emotional aspect that facial expressions convey. Methods for managing stress involve various techniques individuals may use to cope with anxiety or pressure, which are not directly tied to the communicative function of facial expressions. Forms of written communication rely on text and symbols instead of visual cues, missing out on the immediate emotional feedback that facial expressions provide. This distinction highlights the unique role facial expressions play in enhancing interpersonal interaction and emotional understanding.