TY  - GEN
AU  - Neuringer,A J
TI  - Many responses per food reward with free food present
SN  - 0036-8075
PY  - 1970///0811
KW  - Animals
KW  - Columbidae
KW  - Food Preferences
KW  - Reinforcement Schedule
KW  - Reward
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1126/science.169.3944.503
ER  -