Excerpt from Psychobiology, Vol. 1 The animals which were overtrained required 87 per cent less time for the first fifteen trials after operation and made 90 per cent fewer errors than in their initial learning. This, in addi tion to the data on individual behavior in the maze Shows that there was practically no loss Of the habit resulting from the de struction of the frontal lobes. There is an apparent difference in the amount Of retention be tween animals which were over-trained and those which were trained only until they had learned the problem. This differ ence is probably not SO great as is indicated by the averages because the long time spent by the non-overtrained group is the result Of the inclusion Of the rat G1 9 which Spent a great deal Of time in trying to remove the dressing from its head. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.