marginally non-significantp = .078
Planned paired t-tests indicated that only dual-task spatial memory accuracy set-size 8 had a significant improvement [ t (13) = −2.28, p = .04, d = -.90] while dual task set size 12 was marginally non-significant [ t (13) = −1.91, p = .078, d = .79] (see figure 9b ).