TY  - GEN
AU  - Kelleher,R T
TI  - Conditioned reinforcement in second-order schedules
SN  - 0022-5002
PY  - 1967///0618
KW  - Animals
KW  - Birds
KW  - Conditioning, Psychological
KW  - Reinforcement Schedule
KW  - Reinforcement, Psychology
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1901/jeab.1966.9-475
ER  -