approached significancep = 0.06
When word frequency was added as a covariate in the analysis it approached significance ( F (1,2.732) = 3.45, p = 0.06).
When word frequency was added as a covariate in the analysis it approached significance ( F (1,2.732) = 3.45, p = 0.06).
The Morphology × Grade interaction was marginally significant ( F (1,1944) = 2.98, p = 0.08), indicating a significant effect of morphology in both groups, which was larger for 3rd graders whose error rates decreased from 17.4% to 8.9% passing from the R − S − to the R + S + conditions (difference = 8.5%, p < 0.0001); 5th graders’ errors decreased from 9.4% to 1.7% for R − S − and R + S + , respectively (difference = 7.7%, p < 0.0001).