A new series of facial expressions.

Three dimensions of emotion.

1954 • 1,039 citations

The description of facial expressions in terms of two dimensions.

1952 • 581 citations

A scale for the judgment of facial expressions.

1941 • 150 citations

The Frois-Wittmann pictures of facial expression.

1935 • 47 citations

Constant-sum judgments of facial expressions.

1956 • 11 citations