Final answer:
The development of the Mental Measurements Yearbook by James McKeen Cattell and its association with controversial beliefs regarding eugenics and intelligence testing.
Explanation:
False - The man who developed the Mental Measurements Yearbook, James McKeen Cattell, had controversial beliefs associated with eugenics and selective breeding. These beliefs fueled debates about heredity and intelligence testing. Cattell's work on mental measurements and intelligence testing was significant in the field of psychology.
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