<P> 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 . It was developed by psychologist Frederick Herzberg, who theorized that job satisfaction and job dissatisfaction act independently of each other . </P> <P> Attitudes and their connection with industrial mental health are related to Abraham Maslow's theory of motivation . His findings have had a considerable theoretical, as well as a practical, influence on attitudes toward administration . According to Herzberg, individuals are not content with the satisfaction of lower - order needs at work; for example, those needs associated with minimum salary levels or safe and pleasant working conditions . Rather, individuals look for the gratification of higher - level psychological needs having to do with achievement, recognition, responsibility, advancement, and the nature of the work itself . This appears to parallel Maslow's theory of a need hierarchy . However, Herzberg added a new dimension to this theory by proposing a two - factor model of motivation, based on the notion that the presence of one set of job characteristics or incentives leads to worker satisfaction at work, while another and separate set of job characteristics leads to dissatisfaction at work . Thus, satisfaction and dissatisfaction are not on a continuum with one increasing as the other diminishes, but are independent phenomena . This theory suggests that to improve job attitudes and productivity, administrators must recognize and attend to both sets of characteristics and not assume that an increase in satisfaction leads to decrease in dissatisfaction . </P>

Who has propounded the two factor theory of motivation