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Direct linkHanley, Gregory P.; Cammilleri, Anthony P.; Tiger, Jeffrey H.; Ingvarsson, Einar T. – Journal of Applied Behavior Analysis, 2007
We designed a series of analyses to develop a measurement system capable of simultaneously recording the free-play patterns of 20 children in a preschool classroom. Study 1 determined the intermittency with which the location and engagement of each child could be momentarily observed before the accuracy of the measurement was compromised. Results…
Descriptors: Intervals, Measurement, Error of Measurement, Play
