In a four-group-six-study design, an estimate of the size of the interactive testing effect is provided by comparing

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In a four-group-six-study design, the interactive testing effect is estimated by comparing the performance of the two experimental groups. This design typically involves two experimental groups and two control groups, with the experimental groups receiving some form of intervention or treatment. The comparison between the two experimental groups allows researchers to isolate and estimate the size of the interactive effect of the intervention or treatment being tested.

In a Four-Group-Six-Study Design, an Estimate of the Size of the Interactive