Experimental investigations of childhood play.

Citation

Hurlock, E. B. (1934). Experimental investigations of childhood play. Psychological Bulletin, 31(1), 47-66.

http://dx.doi.org/10.1037/h0072042

Abstract

This review of 128 titles is not limited to experimental studies in the narrowest sense; and it organizes the material on the basis of age-periods in play—although disagreement among writers as to these periods is acknowledged. (PsycINFO Database Record (c) 2016 APA, all rights reserved)