Preference after training with differential changeover delays

Article Abstract:

Pigeons' response to changeover delays (COD) to two components of multiple schedules were investigated. When short CODs were provided, higher changeover rates were observed even though the COD value did not systematically affect preference on probe trials. On the other hand, positive changes in the reinforcement rate generated increased preference for the reinforcement-abundant schedule. These findings indicate that the pattern of changeover behavior cannot be directly linked with the pigeons' choice in the probe-trial experiment.

Psychological aspects, Pigeons, Choice (Psychology)

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Representing within-session response rates proportionally and entirely

Article Abstract:

A computerized method of representing within-session responses under various schedules of reinforcement includes a program that counts the responses and reinforcers, and determines the total session time. A cumulative percentage record with a minimum of zero and a maximum of 100 is plotted for the responses. When compared with a straight line, response rates appear as deviations in the slope. The method is illustrated by using data on key pecking of a pigeon on a variable-interval schedule of food reinforcement.

Analysis, Statistics, Statistics (Data)

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Sexual reinforcement in the female rat

Article Abstract:

Interresponse-time analysis studies show that sexual reinforcement in rats are weaker than food reinforcers in operant response experiments. Experimental occurrence rates were established and found to be less than those related to food-reinforced responses. The sexual-reinforcement technique uses nose-poke response rates for six female rats.

Sexual behavior in animals, Animal sexual behavior, Sex (Psychology), Sexuality

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