Summary of key statistical analyses
| Data structure | Type of test | Observed power (α = 0.05) | |
|---|---|---|---|
| a | Four-factor, within-subject design: hemisphere, site, mediality, category | Repeated-measures ANOVA | 0.99 |
| b | One-way, within-subject design: category | Repeated-measures ANOVA | 0.40 |
| c | One-way, within-subject design: category | Repeated-measures ANOVA | 0.35 |
| d | Four-factor, within-subject design: hemisphere, site, mediality, category | Repeated-measures ANOVA | 0.99 |
| e | Two-factor, within-subject design: category, site | Repeated-measures ANOVA | 0.70 |
| f | Two-factor, within-subject design: category, site | Repeated-measures ANOVA | 0.40 |
| g | One-way, within-subject design: category | Repeated-measures ANOVA | 0.40 |
| h | One-way, within-subject design: category | Repeated-measures ANOVA | 0.40 |
| i | Category: faces/objects | Paired t test | 1.00 |
| j | Category: faces/scenes | Paired t test | 1.00 |
| k | Category: scenes/objects | Paired t test | 0.43 |
| l | Two-factor, within-subject design: category, site | Repeated-measures ANOVA | 0.70 |
| m | Four-factor, within-subject design: hemisphere, site, mediality, category | Repeated-measures ANOVA | 0.99 |
| n | Category: scenes/objects | Paired t test | 0.99 |
| o | Category: scenes/faces | Paired t test | 0.99 |
| p | Category: faces/objects | Paired t test | 0.78 |
| q | Site: posterior/central | Paired t test | 0.99 |
| r | Site: central/frontal | Paired t test | 0.99 |
| s | Two-factor, within-subject design: category, component | Repeated-measures ANOVA | 1.00 |
| t | One-way, within-subject design: category | Repeated-measures ANOVA | 1.00 |
| u | One-way, within-subject design: category | Repeated-measures ANOVA | 1.00 |
| v | Category: scenes/faces | Paired t test | 0.99 |
| w | Category: scenes/objects | Paired t test | 0.71 |
| x | Category: faces/objects | Paired t test | 0.61 |
| y | Category: faces/scenes | Paired t test | 0.96 |
| z | Category: faces/objects | Paired t test | 0.76 |
| aa | Category: scenes/objects | Paired t test | 0.12 |
| ab | One-way, within-subject design: category | Repeated-measures ANOVA | 1.00 |
| ac | Four-factor, within-subject design: hemisphere, site, mediality, category | Repeated-measures ANOVA | 0.99 |
| ad | Spatial expanse (natural scenes): closed/open | Paired t test | 0.65 |
| ae | Spatial expanse (man-made scenes): closed/open | Paired t test | 0.12 |
| af | Four-factor, within-subject design: hemisphere, site, mediality, category | Repeated-measures ANOVA | 0.99 |
| ag | Four-factor, within-subject design: hemisphere, site, mediality, category | Repeated-measures ANOVA | 0.99 |
| ah | One-way, within-subject design (left hemisphere): distance | Repeated-measures ANOVA | 0.99 |
| ai | One-way, within-subject design (right hemisphere): distance | Repeated-measures ANOVA | 0.90 |
| aj | Two-way, within-subject design (left hemisphere): naturalness, distance | Repeated-measures ANOVA | 0.99 |
| ak | Two-way, within-subject design (right hemisphere): naturalness, distance | Repeated-measures ANOVA | 0.99 |
| al | 4 computational variables (n = 96), 2 categorical labels (n = 96) | Two-sampled Kolmogorov–Smirnov test (nonparametric) | Not applicablea |
| am | 3 response variables (n = 96), 6 predictor variables (n = 96) | Linear multiple regression (ordinary least squares) | see Table 4b |
a95% confidence intervals on actual distribution means are reported in Results.
bPost hoc power and R 2 for all regression models are reported in Tables 4 and 5.