TABLE 2.
Fixed and random effects in the generalized linear mixed models
| Fixation ratio within AOIs | Interpretation | Effect of encoding | ||||||
|---|---|---|---|---|---|---|---|---|
| Nonverbal | Verbal | |||||||
| Fixed and random effect | b (δ) | 95% CI | b (δ) | 95% CI | b (δ) | 95% CI | b (δ) | 95% CI |
| Intercept | 0.18 | (0.16, 0.19) | 1.13 | (1.06, 1.20) | 1.18 | (1.11, 1.25) | 1.11 | (1.05, 1.18) |
| Age | 0.00 (0.01) | (0.00,.00) | 0.01 (0.01) | (0.01, 0.01) | 0.01 (0.02) | (0.01, 0.01) | 0.01 (0.02) | (0.01, 0.01) |
| Group | −0.03 (0.16) | (−0.05, −0.00) | −0.13 (0.20) | (−0.22, −0.04) | −0.06 (0.09) | (−0.17, 0.04) | −0.11 (0.18) | (−0.21, −0.01) |
| Valence | ns | ns | ns | ns | ||||
| Task | — | 0.08 (0.12) | (0.02, 0.13) | — | — | |||
| Group × Valence | ns | ns | ns | ns | ||||
| Group × Valence × Task | — | ns | — | — | ||||
| Target Head | ref | — | 0.14 (0.22) | (−0.20, 0.48) | 0.37 (0.61) | (0.10, 0.64) | ||
| Target Body | −0.07 (0.44) | (−0.09, −0.05) | — | −0.32 (0.50) | (−0.61, −0.03) | 0.05 (0.08) | (−0.32, 0.42) | |
| Partner Head | 0.05 (0.31) | (0.03, 0.07) | — | −0.27 (0.41) | (−0.51, −0.02) | ns | ||
| Partner Action | −0.07 (0.44) | (−0.09, −0.05) | — | ns | −0.35 (0.58) | (−0.65, −0.06) | ||
| Group × Target Head | ref | — | 0.61 (0.94) | (.06, 1.15) | ns | |||
| Group × Target Body | 0.04 (0.25) | (0.01, 0.07) | — | ns | −0.54 (0.89) | (−1.05, −0.03) | ||
| Group × Partner Head | 0.03 (0.18) | (0.00, 0.06) | — | ns | ns | |||
| Group × Partner Action | 0.03 (0.18) | (−0.00, 0.05) | — | ns | ns | |||
| Variance – Intercept | 0.00 | (0.00, 0.00) | 0.03 | (0.02, 0.06) | 0.03 | (0.02, 0.06) | 0.02 | (0.01, 0.05) |
| Residual | 0.03 | (0.02, 0.03) | 0.41 | (0.37, 0.45) | 0.39 | (0.35, 0.43) | 0.35 | (0.31, 0.38) |
Group was coded as −1 = DHH, 1 = TH. Valence was coded as −1 = negative, 1 = positive. Task was coded as −1 = nonverbal interpretation, 1 = verbal interpretation. AOI was coded as −2 = interaction partner’s head, −1 = interaction partner’s action, 1 = target person’s body, 2 = target person’s head. The last category was used as the reference (“ref”). An “ns” indicates that the variable was removed from the final model due to insignificance. An “—” indicates that the variable was not included in the full model. Significant fixed effects (P < 0.05) are bolded. CI indicates confidence interval. δ = standardized effect size, calculated by dividing fixed coefficient by the square root of the sum of Level 1 (residual) and Level 2 (intercept) variances (formula suggested by Raudenbush and Liu 2000).