1. "Psychology cannot attain the certainty and exactness of the physical sciences, unless it rests on a foundation of experiment and measurement. A step in this direction could be made by applying a series of mental tests and measurements to alarge number of individuals(Cattell, 1809)."

The following ten tests are proposed:

Dynamometer Pressure. II. Rate of Movement. III. Sensation-areas. IV. Pressure causing Pain. V. Least Noticeable difference in Weight. VI. Reaction-time for Sound. VII. Time for naming Colours. VIII. Bi-section of a 50 cm. Line IX. Judgment of 10 seconds time. X. Number of Letters remembered on once Hearing.

Choose three of the above tests and describe how each is used as well as an example of each being used in experimental psychology.