Abstract
Two rats responded on a variety of concurrent variable interval (VI) VI schedules while under a closed economy. Their performance with, and without, the superimposition of a conc. VI, VI punishment schedule was examined. The punishing stimulus was a short, loud tone. The results suggested four main effects of punishment on choice behaviour under the closed economy: the suppressive effect of punishment was not particularly pronounced; strict-matching or over-matching was the dominant result; sensitivity to reinforcement allocation for response allocation was higher than that for time allocation; and the superimposition of a punishment schedule over reinforcement-only situation produces the preference shift towards over-matching. These results are discussed in the light of previous work on punishment in an open economy.
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