<p>The study brings together for the ﬁrst time in one volume an analysis of psychological test results and biometric measurements of large samples of black and white twins-in all, 496 pairs of twins, ranging in age from 12 to 20. In addition to the heritability estimates reported previously (Osborne, 1978), important new analyses of personality, socio-economic status, culture fair and primary mental ability tests, and neurological ﬁndings are presented. In the body of the survey, the reader will ﬁnd independent chapters dealing with heritability of mental ability, school achievement, and personality by race and by sex. In the appendixes will be found all raw data, including psychological test results and the biometric measurements used in zygosity determination. From the printouts in the appendixes, studies in the body of the text may be veriﬁed or unreported relationships among the variables may be investigated. ... - Athens 1980 first edition. Foundation for Human Understanding. First book-length comparison of identical and fraternal black and white twins. Hardcover. Octavo, 286pp., cloth.</p>

Twins: Black and White

Health, Fitness & Dieting

Osborne, Robert T.

Psychology & Counseling

Foundation for Human Understanding

During the past fifty years the emphasis has been of the likeness, common features and equality of races. Yet interracial tensions and hostilities persist today as never before. Race by Dr. John R. Baker deals in an objective manner and informative way with the "ethnic problem"-what is meant by "race," whether race can be related to intelligence, and whether or not one race can be considered "superior" to another. Written with a thoroughness uncharacteristic in the usual treatment of race, Race, is the only book that embraces history, biology, paleontology, the ancestry of man, his ascent to civilization, and the psychology of race.

Race

Baker, John Randal

Testing of Negro Intelligence: 002

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