This study combines meta-analytic and costing techniques to investigate the cost-effectiveness of CAI and tutoring. Using many estimates of costs and effects to yield widely generalizable cost-effectiveness ratios (CERs), it appears that CAI is considerably more cost-effective than tutoring. In fact, CAI may be as much as three times more cost-effective than tutoring.
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Niemiec et al. (1989) studied this question.
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