The cues essential for correct delayed reactions A. Substitutes derived from the external environment B. Substitutes derived from within the subject's body (a) The type of internal cue used (b) The mechanism by which internal cues guide behavior 2. The place of ideas in the grades of animal learning VII. SUM.MARY and CONCLUSIONS 79 VIII. Appendix A. Detailed records of two rats and two raccoons B. Notes on raccoons V ' Experimentation on the present problem was first begun in the University of Chicago laboratory by a graduate student, W. R. Hough. The followmg year the work was taken up and carried somewhat further by another student, H. B. Reed. Both students worked with white rats. Although in each case the results obtained were in strict harmony with those presented in this paper, m neither case were they conclusive. The chief value of the work lay in its suggestiveness. The apparatus used by Reed-Prob. Box Dis described below,^^^e present investigation was carried on in the same laboratory from October, 1910 to April, 1912. 1

No abstract

No abstract