marginally significantP = 0.059
The PP results were in line with the LMM approach, yielding a Time (T1 and T2)×Group (AB versus BA) interaction that was significant for the Communication index [ F (1,41) = 5.75, P = 0.021, η p 2 = 0.123] and marginally significant for the Responsive speech index [ F (1,44) = 3.76, P = 0.059, η p 2 = 0.079].