Examlex
Match Darwin's publication with the topic that it addressed.
-gender differences
Duchenne Smile
A genuine smile that involves the contraction of both the zygomatic major muscle (raising the corners of the mouth) and the orbicularis oculi muscle (causing crow's feet around the eyes).
Competent
Having the necessary ability, knowledge, or skill to do something successfully or efficiently.
Cry
The act of shedding tears in response to an emotional state, such as sadness, happiness, or pain.
Tension
A mental or emotional strain, often resulting from circumstances that cause stress or anxiety.
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