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Steinhart P,. (1937). Der Schlaf des Pferdes. Z Veterinärk, 49, 145–157.
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Spence KW. (1937). Experimental studies of learning and higher mental processes in infra-human primates. Psychol. Bull., 34, 806.
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Antonius. O.,. (1937). Über Herdenbildung und Paarungseigentümlichkeiten der Einhufer. Z. Tierpsychol., 1, 259–289.
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Antonius. O.,. (1937). Über Tiergarten-Exemplare von Equus zebra frederici Trouess. Zool. Garten., 9, 145–149.
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Heck H,. (1937). In: Antonius 1937..
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Schäfer E,. (1937). Zur Kenntnis des Kiang (Equus Kiang Moorcraft). Zool. Garten., 9, 122–139.
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Autorenkollektiv. (1937). [Heeres-] Reitvorschrift H. Dv. 12. Berlin: Mittler & Sohn.
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Gardner, P. (1937). Responses of horses to the same signal in different positions. J. Comp. Physiol, 23(2), 305–332.
Abstract: The horses were required to differentiate a box containing a black cloth from two associated boxes with no cloth. The correct box contained food. It differed in actual position with respect to the other boxes from trial to trial. After learning had occurred, the position of the cloth signal was changed. The changed positions produced many errors, the number of errors depending upon whether the cloth was higher or lower than the opening of the food box. Retests showed original learning to be relatively stable and unaffected. Factors influencing accuracy of discrimination were: contacts with cloth, position of box with respect to entrance, age of the horse (the younger made fewer errors), and breed and type of horse. There is evidence of some retention after three years. (PsycINFO Database Record (c) 2012 APA, all rights reserved)
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Gardner, P. (1937). The responses of horses in a discrimination problem. J Comp Psychol, 23, 305–333.
Abstract: 62 horses were trained to obtain food from the one of three boxes which was covered with a black cloth. The position of the box varied from trial to trial in a random order. Learning was apparently in terms of vision, rather than smell. Many errors were due to the line of direction of the horse's movement as it entered the experimental situation. For all animals the learning curve dropped rapidly during the first few trials. There was slightly more rapid learning in younger horses than in older ones. No sex differences were apparent. Percherons made fewer errors than Belgians. Draft horses showed a slight superiority over military and farm horses. The statistical reliability of these differences is not reported. Good retention was evidenced after a period of several months. (PsycINFO Database Record (c) 2012 APA, all rights reserved)
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To be deleted. (1937). The responses of horses in a discrimination problem. J. Compar. Physiol. Psychol., 23, 305–333.
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