Dataset 1 (fig1) is taken from Riefer & Batchelder (1988, Table 1) and contains multiple individuals.
Dataset 2 (fig2) is taken from Riefer & Batchelder (1988, Table 3).
Riefer, D. M., & Batchelder, W. H. (1988). Multinomial modeling and the measurement of cognitive processes. Psychological Review, 95, 318-339.
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