During Conditioning Experiments Involving Food Rewards, Pigeons Are Often Food

Multiple Choice

During conditioning experiments involving food rewards, pigeons are often food deprived to the point where they are at

A) 80-85% of their free-feeding weight.
B) 90-95% of their natural weight.
C) 80-85% of their natural weight.
D) 90-95% of their free-feeding weight.