+ + +Dial. 39: 19. Jl. 1, ‘05. 230w.

“This book differs from other brief psychologies in being pre-eminently teachable. The book is distinguished from its rivals by its comprehensiveness and balance.”

+ +Ind. 59: 695. S. 21, ‘05. 180w.

Thorndike, Edward Lee. Introduction to the theory of mental and social measurements. [*]$1.50. Science press.

“Professor Thorndike has prepared this book primarily as an aid in doing statistical work of the sort required in laboratories of experimental psychology.... It begins simply, and by affording abundant material for the student to practice what the text preaches gradually develops in his capacity to master the more difficult later chapters. The writer makes a point of keeping within the comprehension of young students.... The topics to which most attention is given are the choice of units of measurement; the measurement of individuals, of groups, of differences, of changes, and of relationships; and the reliability of measurements and sources of error. Strong emphasis is laid upon tables of frequency.... The last chapter contains references for further study, and the appendix a multiplication table up to 100x100, a table of square roots up to 1,000, and a collection of miscellaneous problems for additional practice.”—Am. J. Soc.

“In its special field the book is worthy of a man who is a teacher as well as a psychologist.” Wesley C. Mitchell.

+ +Am. J. Soc. 10: 697. Mr. ‘05. 600w.

“An extremely practical and well-planned volume.”

+ +Dial. 38: 52. Ja. 16, ‘05. 130w.

“The author has written in an attractive style ... and has made this one of the best products of his active pen.” Edward Franklin Buchner.