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Learning & Behavior|February 1, 2011
A differential-outcome effect in pigeons using spatial hedonically nondifferential outcomesAndrea M Friedrich, Thomas R ZentallBehavioural Processes|November 3, 2004
Pigeons shift their preference toward locations of food that take more effort to obtainAndrea M Friedrich, Thomas R ZentallAnimal Cognition|September 26, 2009
A relational differential outcomes effect: pigeons can classify outcomes as "good" and "better"Andrea M Friedrich, Thomas R ZentallPsychonomic Bulletin & Review|May 9, 2007
Required pecking alters judgments of the passage of time by pigeonsThomas R Zentall, Andrea M Friedrich, Tricia S ClementBehavioural Processes|November 3, 2004
Functional equivalence in pigeons involving a four-member classAndrea M Friedrich, Tricia S Clement, Thomas R ZentallLearning & Behavior|January 7, 2006
Discriminative stimuli that follow the absence of reinforcement are preferred by pigeons over those that follow reinforcementAndrea M Friedrich, Tricia S Clement, Thomas R ZentallPsychonomic Bulletin & Review|March 1, 2005
Discriminative stimuli that follow a delay have added value for pigeonsKelly A DiGian, Andrea M Friedrich, Thomas R ZentallLearning & Behavior|April 22, 2009
A differential-outcomes effect using hedonically nondifferential outcomes with delayed matching to sample by pigeonsHolly C Miller, Andrea M Friedrich, Randi J Narkavic, et al.Behavioural Processes|May 17, 2020
Does conditioned reinforcement play a role in procrastination: A pigeon modelThomas R ZentallLearning & Behavior|April 29, 2020
The midsession reversal task: A theoretical analysisThomas R ZentallPageof 18