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Science 16 May 1969:
Vol. 164. no. 3881, pp. 850 - 851
DOI: 10.1126/science.164.3881.850
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Articles

Learning Sets in an Invertebrate

Joseph E. Morrow 1 and Billy L. Smithson 2

1 Department of Psychology, Indiana University, South Bend 46615
2 Department of Psychology, California State College, Fullerton 92634

Eight isopods, Porcellio scaber, were trained with water reinforcement to turn in a T-maze to criterion of correct responses. They were then tested through nine reversals of the turning response. An analysis of variance indicated that mean errors to criterion declined significantly over reversals (F = 4.78, d.f. = 9/63, P < .001).

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Science. ISSN 0036-8075 (print), 1095-9203 (online)