Abstract
Two pigeons were given repeated sessions on a schedule of reinforcement which combined a 1-sec limited hold with a sequence of intervals commonly used to program signals in vigilance experiments (the Mackworth schedule). The proportion of possible reinforcements obtained showed a within-session decrement resembling those familiar from vigilance work. Analysis of Ss’ responses suggests that the decrement can be produced by either reduction in response rate or an altered temporal spacing of responses.
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Riddick, P.J. A vigilance-like decrement without vigilance. Psychon Sci 14, 31–32 (1969). https://doi.org/10.3758/BF03336410
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DOI: https://doi.org/10.3758/BF03336410