An introductory textbook on psychological tests and measurements is presented in paper back booklet form. The style is informal and humorous, and the book is intended to appeal to the contemporary student. Ten chapters constitute the text: (1) On Measurement and Existence; (2) A Brief, Imprecise History of Psychological Testing; (3) The Creation of Differences; (4) Psychological Tests: A Definition; (5) Test Results and Numbers; (6) Descriptive Statistics; (7) Inference Samples, and the Normal Curve; (8) Validity; (9) Reliability; and (10) Constructing a Test. (KM)