highly significantp = 0.003
The difference of difference in face response rate with upright and inverted orientation (calculated for each SZ and TD participant) was highly significant (SZ, 0.10 ± 0.09; Mdn, 0.09, 95% CI [0.06; 0.14]; TD, 0.31 ± 0.25; Mdn, 0.21, 95% CI [0.2; 0.42]; Mann–Whitney test, U = 114.5, p = 0.003, two-tailed; η 2 = 0.204; Fig. 4 ).