TY - GEN AU - Thomas,J R TI - Avoidance of a return to the first component of a chain from the terminal component SN - 0022-5002 PY - 1967///0510 KW - Animals KW - Avoidance Learning KW - Birds KW - Conditioning, Psychological KW - Male KW - Reinforcement, Psychology N1 - Publication Type: Journal Article UR - https://doi.org/10.1901/jeab.1966.9-435 ER -