B. F. Skinner was the behavioural psychologist who developed the notion of operant conditioning, most famously in his experiments with chickens.
Used in Chap. 16: page 261
Also known as skinner
Links:
psychology.fas.harvard.edu:
Harvard: B. F. Skinner
Encyclopedia Britanica:
B. F. Skinner
Wikipedia:
B. F. Skinner