Ss were given the opportunity to button-press for 3 different amounts of promised time-off reward during a 3-hr. sensory deprivation (S-D) session. The promised rewards were 1 min., 2 min., and 3 min. off the scheduled S-D session for every 200 button-presses. Ss produced significantly more button-presses for greater amounts of promised time-off reward.
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References
1.
RossiA. M.SolomonP.Button-pressing for a time-off reward during sensory deprivation: I. Relation to activity reward; II. Relation to descriptions of experience. Percept. mot. Skills, 1964, 18, 211–216.