TY  - RPRT
TI  - Observing response acquisition: preference for unpredictable appetitive rewards obtained under conditions predicted by DMOD.
AU  - H B Daly
PY  - 1985
DO  - 10.1037//0097-7403.11.2.294
UR  - https://pubmed.ncbi.nlm.nih.gov/4009123/
ID  - 4009123
ER  -