Mental Fatigue of Mixed and Full Blood Indians

Abstract

A group of Indians composed of mixed and full bloods showed a tendency to more successfully resist the onset of mental fatigue than did the whites or negroes. The questions then arose: Do full bloods fall away in this performance less than mixed bloods? Do mixed bloods fall away less than whites? The full blood Indians of Forest and Plain groups resist the onset of fatigue more successfully than the mixed bloods whose blood is of the same Indian stock. The mixed blood performance is more like the white performance than that of the full bloods. As introspectionists the full blood Indians are more inclined to acknowledge fatigue than the mixed bloods. This indicates a willingness to put forth effort in larger degree than was found in the mixed bloods. From Psych Bulletin 20:11:01116. (PsycInfo Database Record (c) 2025 APA, all rights reserved)