Ebbinghaus used savings as a dependent variable in his experiments because the number of trials to criterion was constant.

Question

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Ebbinghaus used savings as a dependent variable to measure memory retention, not because the number of trials to criterion was constant, but because it allowed him to quantify how much faster one could relearn material compared to the initial learning, thus indicating the amount of memory retained.

Ebbinghaus Used Savings as a Dependent Variable in His Experiments