TY  - GEN
AU  - Beran,Michael J
AU  - Evans,Theodore A
TI  - Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals
SN  - 0376-6357
PY  - 2006///1228
KW  - Animals
KW  - Choice Behavior
KW  - Comprehension
KW  - Discrimination Learning
KW  - Female
KW  - Food Preferences
KW  - Impulsive Behavior
KW  - Male
KW  - Motivation
KW  - Pan troglodytes
KW  - psychology
KW  - Reward
KW  - Satiety Response
KW  - Social Behavior
KW  - Time Factors
KW  - Visual Perception
N1  - Publication Type: Journal Article; Research Support, N.I.H., Extramural
UR  - https://doi.org/10.1016/j.beproc.2006.07.005
ER  -