TY - GEN AU - ADER,R AU - TATUM,R TI - Free-operant avoidance conditioning in human subjects SN - 0022-5002 PY - 1998///1101 KW - Conditioning, Operant KW - Humans KW - Learning N1 - Publication Type: Journal Article UR - https://doi.org/10.1901/jeab.1961.4-275 ER -