To the Student:
PSYCHOLOGY is a systematic study of mental life. You now turn from the study of physical forces, rocks, flowers, and animal tissues, in nature without, to a study of your own mind. You are to perform experiments upon yourself.
The experimental method enables you to analyze and reduce a mental process to its simplest elements; to control, repeat, and vary the conditions systematically; to record the results; to trace interrelations and explanations of known phenomena; and to discover new facts and problems.
This manual is so arranged as to furnish set exercises in which directions, aids, and explanations are given in the order needed. Only a few of the most general suggestions for your guidance need be given here.
Finish as you go along. The paragraph is the unit; always read a paragraph at a time and perform the experiment, write the report, or master the explanation before you read the next. This is mandatory, because glancing ahead would often vitiate the experiment.
Take systematic notes. The directions for notes are specific in certain minimum requirements. These notes are not primarily for the information of the instructor, or for reviews and examinations, but for the purpose