Human factors

The study of how people interact with their environment. In the case of general aviation, it is the study of how pilot performance is influenced by such issues as the design of cockpits, the function of the organs of the body, the effects of emotions, and the interaction and communication with other participants in the aviation community, such as other crew members and air traffic control personnel.

Helicopter Flying Handbook, p. G-3

Also defined in 1 more source

A multidisciplinary field encompassing the behavioral and social sciences, engineering, and physiology, to consider the variables that influence individual and crew performance for the purpose of optimizing human performance and reducing errors.

Pilot's Handbook of Aeronautical Knowledge, p. G-15

Taught in GEN-L Quick reference, GEN-L Procedures, GEN-F Concepts, GEN-H Concepts.