AP PSYCHOLOGY

Detailed explanation-1: -Frederick Herzberg proposed the two-factor theory based upon what employment characteristics satisfy employees. He was able to conclude that satisfying and dissatisfying characteristics are different.

Detailed explanation-2: -Charles Spearman developed his two-factor theory of intelligence using factor analysis. His research not only led him to develop the concept of the g factor of general intelligence, but also the s factor of specific intellectual abilities.

Detailed explanation-3: -The two-factor theory (also known as Herzberg’s motivation-hygiene theory and dual-factor theory) states that there are certain factors in the workplace that cause job satisfaction while a separate set of factors cause dissatisfaction, all of which act independently of each other.