Work Motivation for Performance
Content Theories of Motivation
Alderfer's ERG Theory
Clayton Alderfer observed that very few attempts had been made to test Maslow's full theory. Further, the evidence accumulated provided only partial support. During the process of refining and extending Maslow's theory, Alderfer provided another need-based theory and a somewhat more useful perspective on motivation. Alderfer's ERG theory compresses Maslow's five need categories into three: existence, relatedness, and growth. In addition, ERG theory details the dynamics of an individual's movement between the need categories in a somewhat more detailed fashion than typically characterizes interpretations of Maslow's work.
As shown in Exhibit 7.7, the ERG model addresses the same needs as those identified in Maslow's work:
- Existence needs include physiological and material safety needs. These needs are satisfied by material conditions and not through interpersonal relations or personal involvement in the work setting.
- Relatedness needs include all of Maslow's social needs, plus social safety and social esteem needs. These needs are satisfied through the exchange of thoughts and feelings with other people.
- Growth needs include self-esteem and self-actualization needs. These needs tend to be satisfied through one's full involvement in work and the work setting.
Exhibit 7.8 identifies a number of ways in which organizations can help their members satisfy these three needs.
Four components - satisfaction progression, frustration, frustration regression, and aspiration - are key to understanding Alderfer's ERG theory. The first of these, satisfaction progression, is in basic agreement with Maslow's process of moving through the needs. As we increasingly satisfy our existence needs, we direct energy toward relatedness needs. As these needs are satisfied, our growth needs become more active. The second component, frustration, occurs when we attempt but fail to satisfy a particular need. The resulting frustration may make satisfying the unmet need even more important to us - unless we repeatedly fail to satisfy that need. In this case, Alderfer's third component, frustration regression, can cause us to shift our attention to a previously satisfied, more concrete, and verifiable need. Lastly, the aspiration component of the ERG model notes that, by its very nature, growth is intrinsically satisfying. The more we grow, the more we want to grow. Therefore, the more we satisfy our growth need, the more important it becomes and the more strongly we are motivated to satisfy it.
Alderfer's model is potentially more useful than Maslow's in that it doesn't create false motivational categories. For example, it is difficult for researchers to ascertain when interaction with others satisfies our need for acceptance and when it satisfies our need for recognition. ERG also focuses attention explicitly on movement through the set of needs in both directions. Further, evidence in support of the three need categories and their order tends to be stronger than evidence for Maslow's five need categories and their relative order.