Delay discounting in rhesus monkeys: equivalent discounting of more and less preferred sucrose concentrations

Learning & Behavior (2012) - Comment
pubmed: 21870212 doi: 10.3758/s13420-011-0045-3 issn: 1543-4494 issn: 1543-4508

Kevin B. Freeman, J. Emily Nonnemacher, Leonard Green, Joel Myerson, William L. Woolverton