Abstract
99 rats were trained on a maze, conditioned on a grid, conditioned in an activity cage, and conditioned as to respiration. Extinction scores also were obtained on the conditioning expts. Only 28 rats completed all problems within the criterial limits. Correlations between 15 variables, for which scores were obtained, are given. The r''s based on the 28 cases tend to be higher than the r''s based on the total number. Correlations between the maze scores and the scores on the conditioning problems are low and have a wide range. Correlations between grid and activity scores are low. Correlations between respiratory conditioning and the other variables are low and almost all of them negative. There is no discussion of the reliability of the problems.

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