Key-peck probability and topography in a concurrent variable-interval variable-interval schedule with food and water reinforcers

Article Abstract:

The probability and topography of key-pecking varies systematically with the type of reinforcer. The response rates and time allocation indicate a significant preference for the key that signals food, inspite of food and water deprivation in pigeons. The food-key gape amplitudes increase with prewatering and decrease with prefeeding without any consistent effect upon water-key gapes. Reacquisition is faster for probability, rather than for topograhy measures. The response from modulation proceeds through the generation of intermediate gape size.

Analysis, Reinforcement (Psychology), Probability learning

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Effects of food-pellet size on rate, latency, and topography of autoshaped key pecks and gapes in pigeons

Article Abstract:

An experiment examined how pigeons reacted under autoshaping contingencies where different conditional stimuli were linked with unconditional stimuli of different quantities over consecutive trials within a session. Results showed that key-peck and gape rates, key-peck and gape latencies, gape amplitudes, and beak resting positions during food-associated conditional stimuli varied with the magnitude of the unconditioned stimulus of pellet size.

Autoshaping (Psychology)

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