marginally significantp = 0.057
The difference between the first two time windows was confirmed by a significant set-size by time interaction [ F (3,18) = 9.49, p = 0.01]; the difference in asymptote between the latter two time windows was suggested by a marginally significant interaction between time and set-sizes two and four [ F (1,6) = 5.51, p = 0.057].