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Kulik, James A.; Fletcher, J. D. – Review of Educational Research, 2016
This review describes a meta-analysis of findings from 50 controlled evaluations of intelligent computer tutoring systems. The median effect of intelligent tutoring in the 50 evaluations was to raise test scores 0.66 standard deviations over conventional levels, or from the 50th to the 75th percentile. However, the amount of improvement found in…
Descriptors: Intelligent Tutoring Systems, Meta Analysis, Computer Assisted Instruction, Statistical Analysis