TY  - RPRT
TI  - Dynamic changes in reinforcer effectiveness: theoretical, methodological, and practical implications for applied research.
AU  - Eric S Murphy
AU  - Frances K McSweeney
AU  - Richard G Smith
AU  - Jennifer J McComas
PY  - 2003
DO  - 10.1901/jaba.2003.36-421
UR  - https://pubmed.ncbi.nlm.nih.gov/14768663/
ID  - 14768663
ER  -