Holland influenced practice and research in career development by contributing a clear theory useful in organizing information about individuals and career alternatives and for understanding individuals' entry and persistence in occupational and other environments. His theory was repeatedly revised in response to evidence. As Holland's own career…

The occupational-environmental typology (Holland, 1985) is based on a theory of persons and work environments. The theory uses a classification of persons and work environments to describe differences and similarities. The theory explains career choice and persistence, attraction and retention of workers, job satisfaction, and environmental…

Holland's original environmental formulations proposed that an environment's influence was transmitted through its inhabitants: environments could be classified by the predominant personality type of their inhabitants. But the approach to environmental assessment that relies on a census of inhabitants is only one approach, job analysis is another.…