Pigeons' performance in the number‐left task

This study investigates the mechanisms that underlie pigeons' performance in the number‐left task. After producing x light flashes, pigeons had to choose between a standard option that delivered reinforcement after a fixed number of additional flashes, S = 4, and a number‐left option that delivered reinforcement after a variable number of additional flashes, L = 8 − x . In Experiment 1, pigeons were trained with forced and choice trials with 1 ≤ x ≤ 7. During testing, the number of choice trials was simply increased. In Experiment 2, pigeons were trained only with the anchor numerosities x = 1 and x = 7 and during testing unreinforced probe trials introduced the intermediate numerosities, x = 2, 3, 4, 5, and 6. Performance was similar in both experiments and consistent with a computational mechanism. To test whether performance in the previous experiments was due to the substantial overlap in the induced generalization gradients around the anchor numerosities, in Experiments 3a and 3b, we selected anchor numerosities that were farther apart ( x = 5 and x = 50, with S = 12 and L = 53 − x ). Yet, pigeons' performance remained similar. We discuss the implications of these findings for the mechanisms that underlie numerosity discrimination

Associative learning · Cognition · Cognitive psychology · Generalization · Mechanism (biology) · Numerosity adaptation effect · Physics · Reinforcement · Task (project management) · Artificial Intelligence · Behavioral and Psychological Studies · Cognitive and developmental aspects of mathematical skills · Computer Science · Mathematics · Mathematics Education and Teaching Techniques · Neuroscience · Psychology · Social Psychology

• Schedules of reinforcement.

  C B FERSTER, B F Skinner et al.•1957

  Incluir item

• Nonverbal Counting in Humans

  Open Access•John Whalen, C R Gallistel et al.•Psychological Science•1999

  Incluir item

• Generalized Eta and Omega Squared Statistics

  Stephen Olejnik, James Algina•Psychological Methods•2003

  Incluir item

• Scalar Timing in Memory

  Open Access•John Gibbon, Russell M Church et al.•Annals of the New York Academy of…•1984

  Incluir item

• Preverbal and verbal counting and computation

  Open Access•C R Gallistel, Renée Gelman et al.•Cognition•1992

  Incluir item

• Recommended effect size statistics for repeated measures designs

  Open Access•Roger Bakeman•Behavior Research Methods•2005

  Incluir item

• Calculating and reporting effect sizes to facilitate cumulative science

  Open Access•Daniël Lakens•Frontiers in Psychology•2013

  Incluir item