Table 2.
ERP Results for Condition (Source Hits, CR) x Age Group x Coronal x Sagittal ANOVA.
| Time Window | Omnibus ANOVA Condition Effects | Appropriate Follow-up Tests (Where condition differences found) |
||
|---|---|---|---|---|
| Younger Children | Older Children | Adults | ||
| 300−500 | 4-way: F(8,340) = 2.33, ηp2 = .05** C x G x Co * C x Co ** |
ns | Across Frontal: F(1,28) = 4.91, ηp2 = .15* P3: t(28) = 2.71, d = .50** Pz: t(28) = 4.18, d = .78*** |
Midline (Fz,Cz,Pz): t(29) = 3.01, d = .55*** Right (F4,C4,P4): t(30) = 2.33, d = .42** |
| 500−700 | C x G x Co: F(4,340) = 4.94, ηp2 = .10*** C x S x Co ** C x Co *** C x S * |
ns | Frontal: t(28) = -3.06, d = .57*** Parietal: t(28) = 3.50, d = .65*** |
ns |
| 700−900 | 4-way: F(8, 340) = 2.00, ηp2 = .05* C x G x S ** C x S x Co ** C x S *** C *** |
Right (F4, C4, P4) t(28) = -2.76, d = .51** |
Fz: t(28) = -2.81, d = .52** F4: t(28) = -2.25, d = .42* C4: t(28) = -2.35, d = .44** |
Across all electrodes: F(1, 29) = 17.16, ηp2 = .37*** (C x S x Co ANOVA revealed main effect of C) |
| 900−1100 | 4-way: F(8, 340) = 2.08, ηp2 = .05* C x S x Co *** C x S *** C** |
Fz: t(28)=-3.11, d = .58*** F4: t(28) = -2.39, d = .44** |
Fz: t(28) = -2.12, d = .39* |
Across Central: F(1, 29) = 6.02, ηp2 = .17** P3: t(30) = -2.12, d = .38* Pz: t(30) = -3.44, d = .62*** |
| 1100−1300 | 4-way: F(8, 340) = 3.15, ηp2 = .07*** C x S x Co *** C x S *** C x Co * C * |
Cz: t(28) = -2.14, d = .40* P3: t(28) = -2.51, d = .47** Pz: t(28) = -3.04, d = .56*** |
ns | Central: F(1, 29) = 7.67, ηp2 = .21** P3: t(30) = -3.14, d = .56*** Pz: t(30) = -4.84, d = .87*** |
| 1300−1500 | 4-way: F(8, 340) = 2.89, ηp2 = .06*** C x S x Co ** C x S ** C x Co *** |
P3: t(28) = -2.26, d = .42* Pz: t(28) = -2.38, d = .44** |
Parietal: t(28) = -2.10, d = .39* |
Central: F(1, 29) = 4.70, ηp2 = .14* P3: t(30) = -3.73, d = .67*** Pz: t(30) = -5.80, d = 1.04*** P4: t(30) = -2.46, d = .44** |
| 1500−1700 | C x S x Co: F(4, 340) = 3.72, ηp2 = .04** C x Co *** C x S ** |
Across ages effect: Parietal: t(88) = -2.89, d = .31*** |
||
| 1700−1900 | C x S x Co: F(4, 340) = 3.81, ηp2 = .04** C x Co *** |
Across ages effect: Parietal: t(88) = -2.89, d = .31*** |
||
Note. *p < .05, **p < .03, ***p < .006. C=Condition; G=Age Group; S=Sagittal; Co=Coronal; 4-way=4-way interaction. For the Omnibus ANOVA column, we present full statistics (e.g., df, test statistic, effect size) for the largest interaction effect that was significant; for remaining Condition effects we only report significance level for brevity. For the last 3 columns, we report only the final follow-up test findings for brevity; lower level tests were only pursued if higher level main effects or interactions were significant. If there is an interaction effect but the lower level tests are not significant, we report the abbreviation ns. Direction of effects are reported with positive or negative statistic (i.e., if t-statistic is positive source hits > correct rejections; if t-statistic is negative source hits < correct rejections).