Race, Evolution, and Behavior: A Life History Perspective is a book by Canadian psychologist and author J. Philippe Rushton. Rushton was a professor of psychology at the University of Western Ontario for many years, and the head of the controversial Pioneer Fund. The first unabridged edition of the book came out in 1995, and the third, latest unabridged edition came out in 2000; abridged versions were also distributed. Rushton argues that race is a valid biological concept and that racial differences frequently arrange in a continuum across 60 different behavioral and anatomical variables, with Mongoloids (East Asians) at one end of the continuum, Negroids (Sub-Saharan Black Africans) at the opposite extreme, and Caucasoids (Europeans) in the middle. The book was generally received negatively, its methodology and conclusions being criticized by many experts. The aggressive marketing strategy also received a lot of criticism. The book received positive reviews by some researchers, many of whom were personally associated with Rushton and with the Pioneer Fund which funded much of Rushton's research. The book has been examined as an example of Pioneer's funding of scientific racism, while psychologist Michael Howe has identified the book as part of a movement, begun in the 1990s, to promote a racial agenda in social policy. Summary The book grew out of Rushton's 1989 paper, "Evolutionary Biology and Heritable Traits (With Reference to Oriental-White-Black Difference)". The 1st unabridged edition was published in 1995, the 2nd unabridged edition in 1997, and the 3rd unabridged edition in 2000. Rushton argues that Mongoloid, Caucasoid and Negroid populations fall consistently into the same one-two-three way pattern when compared on a list of sixty distinctly different behavioral and anatomical traits and variables. Rushton uses averages of hundreds of studies, modern and historical, to assert the existence of this pattern. Rushton's book is focused on what he considers the three broadest racial groups, and does not address other populations such as Southeast Asians and Australian Aborigines. The book argues that Mongoloids, on average, are at one end of a continuum, that Negroids, on average, are at the opposite end of that continuum, and that Caucasoids rank in between Mongoloids and Negroids, but closer to Mongoloids. His continuum includes both external physical characteristics and personality traits. Differential K theory Differential K theory is a debunked theory proposed by Rushton, which attempts to apply r/K selection theory to human races. According to Rushton, this theory explains