BijouS.W. (1975, April). Symposium: Functional analysis of complex behavior in children. Paper presented at Society for Research in Child Development.
2.
HamadC., Herbert-JacksonE., & RisleyT. (1975). The selection of toys as the basis for maximizing appropriate play behaviors in children. Paper presented at American Psychological Association, Chicago.
3.
HulsonE.L. (1930). An analysis of free play of ten four-year-old children through consecutive observations. Journal of Juvenile Research, 14, 188–208.
4.
KawinE. (1934, December). The function of toys in relation to child development. Childhood Education, 122–124.
5.
McCallR. (1974). Exploratory manipulation and play in the human infant (Monograph of the Society for Research in Child Development). Chicago: University of Chicago Press.
6.
NunnallyJ.C., & LemondL.C. (1973). Exploratory behavior and human development. In ReeseH.W. (Ed.), Advances in Child Development & Behavior (Vol. 8). New York: Academic Press, Inc.
7.
QuilitchH.R., & RisleyT. (1973). The effects of play materials on social play. Journal of Applied Behavior Analysis, 6, 573–578.
8.
QuilitchH.R., ChristophersonE.R., & RisleyT. (1972). The organization of group care environments: Toy evaluation. Paper presented at American Psychological Association, Honolulu.
9.
UpdegraffR., & HerbstE.K. (1933). An experimental study of the social behavior stimulated in young children by certain play materials. Pedagogical Seminary and Journal of Genetic Psychology, 42, 372–391.
10.
Van AlstyneD. (1932). Play behavior and choice of play materials of preschool children. Chicago: University of Chicago Press.
11.
WehmanP. (in press). A leisure time activities curriculum for the developmentally disabled. Education and Training of the Mentally Retarded.