TY  - GEN
AU  - Grace,R
AU  - Schwendiman,J
AU  - Nevin,J
TI  - Effects of unsignaled delay of reinforcement on preference and resistance to change
SN  - 0022-5002
PY  - 2010///0629
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1901/jeab.1998.69-247
ER  -