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Author (up) DiGian, K.A.; Friedrich, A.M.; Zentall, T.R. openurl 
  Title Discriminative stimuli that follow a delay have added value for pigeons Type Journal Article
  Year 2004 Publication Psychonomic bulletin & review Abbreviated Journal Psychon Bull Rev  
  Volume 11 Issue 5 Pages 889-895  
  Keywords Animals; Behavior, Animal; Choice Behavior; Columbidae; *Cues; *Discrimination (Psychology)  
  Abstract Clement, Feltus, Kaiser, and Zentall (2000) reported that pigeons prefer discriminative stimuli that require greater effort (more pecks) to obtain over those that require less effort. In the present experiment, we examined two variables associated with this phenomenon. First, we asked whether delay of reinforcement, presumably a relatively aversive event similar to effort, would produce similar effects. Second, we asked whether the stimulus preference produced by a prior relatively aversive event depends on its anticipation. Anticipation of delay was accomplished by signaling its occurrence. Results indicated that delays can produce preferences similar to those produced by increased effort, but only if the delays are signaled.  
  Address University of Kentucky, Lexington, Kentucky 40506-0044, USA  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1069-9384 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:15732699 Approved no  
  Call Number refbase @ user @ Serial 226  
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