Which facial expression is commonly associated with anger: squinting eyes, furrowed brows, or pursed lips?

 All three facial expressions you mentioned - squinting eyes, furrowed brows, and pursed lips - can be associated with anger, but they may not always occur together and their intensity can vary depending on the level of anger and individual differences. Here's a breakdown:

Furrowed brows: This is perhaps the most common facial expression associated with anger. Lowering and furrowing the eyebrows creates a more intense and dominant appearance, potentially serving as a warning to others.

Squinting eyes: This can be a sign of anger, especially when combined with furrowed brows. Narrowing the eyes may focus attention and increase vigilance in potentially threatening situations. However, squinting can also be associated with focusing intently, straining to see, or even experiencing pain, so it's not always a clear indicator of anger alone.

Pursed lips: This can signal various emotions, including anger, concentration, disapproval, or even withholding words. In anger, pursed lips are often tightly pressed together, potentially signifying suppressed anger or frustration.

Additionally:

• Reddened face: Increased blood flow to the face can accompany anger, making it appear flushed or red.
• Jaw clenching: Tightening the jaw can be a sign of tension and anger.
• Glaring: Intense eye contact can be intimidating and associated with anger.

It's important to remember that facial expressions alone don't definitively indicate specific emotions. Context, body language, and verbal cues should all be considered for a more accurate understanding of someone's emotional state.