Peak shift in concurrent schedules1
نویسندگان
چکیده
منابع مشابه
Spatial Peak Shift and Generalization in Pigeons
How pigeons generalize across spatial locations was examined in the 4 experiments reported in this article. During training, a square was presented at a fixed height at 1 of 2 horizontal locations on a monitor screen. One location (S +) signaled reward, whereas the other one (S ) signaled no reward. The birds were then tested occasionally with a range of locations. After training with S+ only, ...
متن کاملTemporal generalization and peak shift in humans.
Three experiments investigated temporal generalization in humans. In Experiment 1, a peak shift effect was produced when participants were given intradimensional discrimination training. In Experiment 2, after training with a standard S+ and generalization testing with an asymmetrical series of durations, generalization gradients moved toward the prevailing adaptation level. In Experiment 3, ge...
متن کاملSpatial generalization and peak shift in humans
Using a computer betting game, five experiments tested university students on spatial generalization and peak shift. On each trial, one location was marked and the subject was invited to bet 0–4 points. At the winning location (S+), bets won four times the points betted. At nearby losing locations (S)s), points betted were lost. Generalization gradients were exponential in shape, supporting She...
متن کاملPeak shift but not range effects in recognition of faces
University students were trained to discriminate between two gray-scale images of faces that varied along a continuum from a unique face to an average face created by morphing. Following training, participants were tested without feedback for their ability to recognize the positive face (S+) within a range of faces along the continuum. In Experiments 1 and 4, the range of stimuli presented duri...
متن کاملGenetic signature of adaptive peak shift in threespine stickleback.
Transition of an evolving population to a new adaptive optimum is predicted to leave a signature in the distribution of effect sizes of fixed mutations. If they affect many traits (are pleiotropic), large effect mutations should contribute more when a population evolves to a farther adaptive peak than to a nearer peak. We tested this prediction in wild threespine stickleback fish (Gasterosteus ...
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ژورنال
عنوان ژورنال: Journal of the Experimental Analysis of Behavior
سال: 1971
ISSN: 0022-5002
DOI: 10.1901/jeab.1971.15-73