Abstract:
:The ability to compute probability, previously shown in nonverbal infants, apes, and monkeys, was examined in three experiments with pigeons. After responding to individually presented keys in an operant chamber that delivered reinforcement with varying probabilities, pigeons chose between these keys on probe trials. Pigeons strongly preferred a 75% reinforced key over a 25% reinforced key, even when the total number of reinforcers obtained on each key was equated. When both keys delivered 50% reinforcement, pigeons showed indifference between them, even though three times more reinforcers were obtained on one key than on the other. It is suggested that computation of probability may be common to many classes of animals and may be driven by the need to forage successfully for nutritional food items, mates, and areas with a low density of predators.
journal_name
Anim Cognjournal_title
Animal cognitionauthors
Roberts WA,MacDonald H,Lo KHdoi
10.1007/s10071-018-1192-0subject
Has Abstractpub_date
2018-07-01 00:00:00pages
575-581issue
4eissn
1435-9448issn
1435-9456pii
10.1007/s10071-018-1192-0journal_volume
21pub_type
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