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Grabinger, R. Scott; Pollock, Joellyn – Journal of Educational Computing Research, 1989
Discussion of appropriate feedback in an instructional setting focuses on a study of undergraduates learning graphics materials production techniques that investigated whether internal feedback, provided by an expert system, differed in effectiveness from external feedback, provided by an instructor. The effects of each on processing activities…
Descriptors: Computer Assisted Instruction, Evaluation Criteria, Expert Systems, Feedback

Lehrer, Richard; Randle, Lynn – Journal of Educational Computing Research, 1987
An experimental study compared the instructional effectiveness of Logo programming, commercially available software designed to aid composition and problem solving, and traditional teaching methods for low socioeconomic status first-grade students. Both software environments enhanced problem solving performance for a novel task, but Logo was most…
Descriptors: Analysis of Covariance, Comparative Analysis, Computer Assisted Instruction, Conventional Instruction