id author title date pages extension mime words sentences flesch summary cache txt 10843 Yerkes, Robert Mearns The Mental Life of Monkeys and Apes: A Study of Ideational Behavior .txt text/plain 71651 4268 82 Each time an animal enters a wrong box, it is punished for right box employed by the animal during the course of experimentation. Following the series of control trials of problem 1 given to Skirrl on box at the left before being presented with the second problem, the him to work his way out of each wrong box by raising the entrance door Throughout the trials with this problem, the end boxes, numbers 1 and 9, problem 2 (second box from right end).] the development of method e, the direct choice of the right box. this method suddenly gave place to direct choice of the right box, and enter the second box from the right end, Julius developed also the experimenter on the next choice of the box confined the animal for a The monkey Skirrl was tested by means of the box stacking experiment ./cache/10843.txt ./txt/10843.txt