He had continued his theory of five races .
In his 1962 book , The Origin of Races , Coon theorized that some races reached the Homo sapiens stage in evolution before others , resulting in the higher degree of civilization among some races .
Coon had continued Coon 's theory of five races .
In his 1962 book , The Origin of Races , Coon theorized that some races reached the Homo sapiens stage in evolution before others , resulting in the higher degree of civilization among some races .