Alderfer’s ERG Theory Clayton Alderfer was an American psychologist who further developed Maslow's hierarchy of needs by categorizing the hierarchy into his ERG theory. ERG is an acronym for Existence, Relatedness, and Growth. Alderfer re-categorized Maslow’s hierarchy of needs into three broader classes: Existence, Relatedness, and Growth. Existence is the need for basic material necessities, which are physiological and physical safety needs combined. Relatedness includes an individual’s aspiration for maintaining significant interpersonal relationships with family, peers and/or superiors. It includes acquiring public recognition and notoriety. It is similar to Maslow’s social and esteem category of needs.
Growth is the need for self-development, personal growth, and advancement. It is compared to the Maslow need of self-actualization. Esteem is also identified in this category.
According to the ERG Theory, more than one need can be in action simultaneously. One does not have to be met before another. Individuals have a variety of needs which must be achieved at the same time in order for them to be properly motivated. If the higher needs are not met, a person might regress to the lower for satisfaction. All need must be considered for motivation to take place and advance in personal growth.
McClelland’s Need Theory This Need Theory was created by psychologist, David McClelland. He stated that needs for achievement, affiliation, and power affect the actions of people. He attached a…