The Psychology of Arithmetic

ISBN: 9781330193327 出版年：2016 页码：333 Edward L Thorndike Forgotten Books

The second is the great increase in knowledge of the amount, rate, and conditions of improvement in those organized groups or hierarchies of habits which we call abilities, such as ability to add or ability to read. Practice and improvement are no longer vague generalities, but concern changes which are definable and measurable by standard tests and scales.