The Relationship Between Task Difficulty and Palmar Skin Resistance

The relation of muscle action potentials to difficulty and frustration.

1938 • 51 citations

Uniform Current for Continuous, Standard Unit Resistance Records

1932 • 28 citations

Certain somatic activities in relation to successful and unsuccessful problem solving.

1935 • 27 citations

The measurement of difficulty.

1936 • 12 citations

An Instrument for Determining Visual Thresholds

1940 • 2 citations