The Abilities of Man, Their Nature and Measurement

The Abilities of Man, Their Nature and Measurement

The Abilities of Man, Their Nature and Measurement

The Abilities of Man, Their Nature and Measurement

Excerpt

This work is the product of many hands and much patience. The lines of investigation were suggested--and even extensive beginnings made to follow them up--over twenty years ago. Since, there have been carried out a long train of laborious researches, each bringing, as it were, a single stone upon a preconceived unitary plan. And here, in this volume, at last, every stone is fitted into its place to build up the common edifice.

The joint authors of these researches have been my colleagues and collaborators, Dr. Aveling, Miss Bones, Prof. Burt, Mrs. Goulston, Dr. Wynn Jones, Prof. Krueger, Dr. Hart, Prof. Holzinger, Miss Peyer, and Mr. Philpott. No less have participated my sometime students, notably Dr. Abelson, Dr. Allen, Mr. Bradley, Mr. Edwards, Prof. Gopalaswami, Dr. Hamid, Mr. Hanlin, Mr. Hargeaves, Mr. Kay, Dr. Lankes, Dr. Magson, Dr. McCrae, Mr. Laycock, Dr. McQueen, Mr. Perera, Dr. Phillips, Dr. Saxby, Dr. Sleight, Dr. Slocombe, Prof. Strasheim, Dr. Webb, Dr. Wild, and Dr. Wohlgemuth.

Much has also been contributed by those who have so kindly read over and given advice about the present book. An unforgettable debt for many hours devoted to this purpose--notwithstanding urgent claims elsewhere--is due to Dr. Aveling. And the same may be said of Dr. Ballard, who, with much self-sacrifice, has examined the work throughout and made numerous suggestions of great value. To Prof. Holzinger, I owe, besides many shrewd and . . .

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