Table 2.
Results of the ANOVAs for repeated measures with F-values (df), p-values, and effect sizes η2p for the N400 mean peak amplitudes and latencies including the between-subject factor group (CON; IMP; NIMP) and the within-subject-factor time (pre; post) and condition (W; PH; PW).
| Effect | Mean peak amplitudes | Peak latencies | ||||
|---|---|---|---|---|---|---|
| F | p | η2p | F | p | η2p | |
| Group (G) | 5.39 (2, 50) | 0.008 | 0.18 | 4.95 (2, 50) | 0.011 | 0.17 |
| Time (T) | 0.68 (1, 50) | 0.413 | – | 1.27 (1, 50) | 0.265 | – |
| Condition (C) | 2.60 (2, 100) | 0.080 | – | 0.49 (2, 100) | 0.612 | – |
| G*T | 2.59 (2, 50) | 0.085 | – | 2.26 (2, 50) | 0.115 | – |
| G*C | 0.44 (4, 100) | 0.783 | – | 1.73 (2, 100) | 0.150 | – |
| T*C | 0.96 (2, 100) | 0.388 | – | 0.50 (2, 100) | 0.608 | – |
| G*T*C | 1.02 (4, 100) | 0.402 | – | 1.35 (4, 100) | 0.258 | – |
CON, control children; IMP, improvers; NIMP, non-improvers; pre, before intervention; post, after intervention; W, words; PH, pseudohomophones; PW, pseudowords. Significant results are indicated in bold.