Since facial expressions are part of our biological heritage, shouldn't reading them be second nature? In fact, most of us are dismal at reading faces, particularly those of strangers. Since ...

If a mouse is in a lot of pain, an experienced handler may see it in the animal’s facial expression—its narrowed eyes and bulging cheeks. But, subtler facial expressions may be more difficult to match ...

researchers tracked facial micromovements that typically go unnoticed. "We wanted to investigate whether brief microexpressions appeared during common emotional expressions, like smiling or ...