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Nallan, G. B., Pace, G. M., McCoy, D. F., & Zentall, T. R. (1983). The role of elicited responding in the feature-positive effect. Am J Psychol, 96(3), 377–390.
Abstract: Hearst and Jenkins proposed in 1974 that elicited responding accounts for the feature-positive effect. To test this position, pigeons were exposed to a feature-positive or feature-negative discrimination between successively presented displays--one consisted of a red and a green response key and the other consisted of two green response keys. There were four main conditions: 5-5 (5-sec trials, 5-sec intertrial intervals), 5-30, 30-30, and 30-180. Conditions 5-30 and 30-180 should produce the largest amount of elicited responding, and therefore the largest feature-positive effects. A response-independent bird was yoked to each response-dependent bird to allow direct assessment of the amount of elicited responding generated by each condition. Contrary to the predictions by Hearst and Jenkins's theory, response-dependent birds showed large feature-positive effects in each condition. The largest feature-positive effect was obtained in condition 5-5. Response-independent birds produced similar results, but manifested low response rates.
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Berger J,. (1983). Ecology and catastrophic mortality in wild horses: Implantations for interpreting fossil assemblages. Science 220, , 1403–1404.
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Hoffmann R,. (1983). Social organization patterns of several Feral horse and Feral ass populations in Central Australia. Z Säugetierk, 48, 124–126.
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Hoffmann R,. (1983). The development of social behavior in immature males of a feral horse population. Diss Tübingen, .
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Java Rl,. (1983). Census of wild Ass. Tigerpaper, 10, 23.
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Kaseda Y,. (1983). Seasonal variations in heart rate and body temperature of Misaki horses. Proc Vth Wid Conf Anim Prod, 2, 765–766.
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Lang Em,. (1983). Die Somaliwildesel, Equus asinus somalicus, im Basler Zoo. Zool Garten NF, 53, 73–80.
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Miller R,. (1983). Habitat use of feral horses and cattle in Wyoming's Red Desert. J Range Mgmt, 36, 195–199.
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Miller R,. (1983). Seasonal movements and home ranges of feral horse bands in Wyoming's Red Desert. J Range Mgmt, 36, 199–201.
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Ryder O,. (1983). The quagga is gone but its genes may survive. Zoonooz San Diego Zoo, 16.
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