Thesis

Impulsivity in adult humans under positive reinforcement in token economies

Ten college-aged students participated in a choice study to determine preference for video reinforcers of different magnitude under alternating immediate and delayed token exchange conditions. Choosing a key designated green or yellow earned one or three tokens. Each token was exchanged for 15 seconds of video access. A preference for the yellow choice in the delayed exchange condition demonstrated impulsivity, while a preference for the green choice demonstrated self-control. Indifference occurred when no preference for either choice was observed. Indifference in the first delayed exchange was followed by an impulsivity preference in the second delayed exchange. Limited support for generating impulsivity with a brief video reinforcer was observed.

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