Table 2.

Incubation-driven vs. enactment-driven expected performance rise at Time 2

Initial interactivity level	Final interactivity level
	Low	High
Incubation-driven performance improvement at Time 2
Low	+a	+b1
High	++b1	++a
Enactment-driven performance improvement at Time 2
Low	+a	++b2
High	+b2	++a

Time 1 = initial interactivity level, Time 2 = final interactivity level

^aDenotes small (+) or large (++) increase in performance observed in Experiment 1

^bDenotes small (+) or large (++) increase in performance expected in Experiment 2, under the (1) incubation-driven or the (2) enactment-driven hypothesis, respectively