Suboptimal Choice by Pigeons: Evidence that the Value of the Conditioned Reinforcer Rather than its Frequency Determines Choice
The Psychological Record (2015) - Comment
doi: 10.1007/s40732-015-0119-2  issn: 0033-2933  issn: 2163-3452 

Thomas R. Zentall, Jennifer R. Laude, Jessica P. Stagner, Aaron P. Smith