His major interest was the psychology and sociology of leisure.

Sociology of leisure is the study of how humans organize their free time.

The sociology of leisure is closely tied to the sociology of work, as each explores a different side of the work-leisure relationship.

Joffre Dumazedier, Towards a Sociology of Leisure, Macmillan, 1967.

Gilles Pronovost, The Sociology of Leisure.

John R. Kelly, "Counterpoints in the Sociology of Leisure," Leisure Sciences, vol.

Review of the above book: Margaret Carlisle Duncan, "The Sociology of Leisure," Journal of Leisure Research, vol.

Bennet M. Bergero, "The Sociology of Leisure: Some Suggestions," Industrial Relations: A Journal of Economy and Society, vol.

Rhona Rapoport and Robert N. Rapoport, "Four Themes in the Sociology of Leisure," The British Journal of Sociology, vol.

Sociology of leisure is a fairly recent subfield of sociology, compared to more traditional subfields such as sociology of work, sociology of the family, and sociology of education: it saw most of its development in the second half of the 20th century.

Finally, as with many other fields of inquiry in the social sciences, the study of the sociology of leisure is hampered by the lack of reliable data for comparative longitudinal studies, as there was little to no standardized data-gathering on leisure throughout most of human history.