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ectotherm

n. an animal whose body temperature is largely regulated by the environment, which is the source of most of its heat. Examples include snakes and bees. Such animals, formerly called poikilotherms, are popularly described as cold-blooded. Compare endotherm. —ectothermic adj.

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Psychology term of the day

January 15th 2025

delay-of-reward gradient

delay-of-reward gradient

the relation between delay of reinforcement and the effectiveness of reinforcement. The effectiveness decreases as the delay increases. Also called delay-of-reinforcement gradient.