John Henryism refers to a personality predisposition to cope actively with psychosocial stressors; may become lethal when those active coping efforts are unsuccessful; the syndrome has been especially documented among lower income Blacks at risk for or suffering from hypertension.
- John Stuart Mill (1806 - 1873) : John Stuart Mill disagreed with his father James Mill that all complex ideas could be reduced to simple ideas. John Stuart or J.S. Mill proposed a process of mental chemistry according to which complex ideas could be distinctly different from the simple ideas (elements) that constituted them. J. S. Mill believed strongly that a science of human nature could be and should be developed.