John K. Hemphill
1919
Situational factors in leadership
The effect of human vs. machine set on group problem-solving procedures
Communication restraints and mutual problem-solving behavior
Dimensions of executive positions
Effects of task motivation and expectancy of accomplishment upon attempts to lead
Group dimensions
Group dimensions description questionnaire
The effect of "human" vs. "machine" set on group problem-solving procedures
The Engineering study
The relation between possession of task-relevant information and attempts to lead