• Job design and motivation as a core research direction, including development of the Job Diagnostic Survey and theory-driven work design, validated by empirical and replication studies on employee reactions to job characteristics [5], [11], [1], [13].

• Vocational development and career choice framed as longitudinal developmental processes, with maturation measures, theory of choice, and exploration across adolescence to adulthood [2], [4], [15], [18], [8], [19], [16].

• Job attitudes and need satisfaction emerge as central outcome constructs in work design and organizational contexts, explored through sources of job satisfaction, bottom/middle-management needs, and attitude reviews [20], [12], [6], [1].

• Humanistic and labor-process perspectives on work are developed as foundational understandings of the nature of work and the worker, spanning Work and the Nature of Man, Industrial Jobs and the Worker, and principles for vocational development [10], [7], [17].