Table 4.
Tests of invariance across mothers with and without SUDs.
| Title | Model | χ2 | df | CFI | RMSEA | Δ CFI | Δ RMSEA |
|---|---|---|---|---|---|---|---|
| Activity (8) | Configural | 119.42 | 40 | 0.92 | 0.066 (0.053-0.080) | ||
| Metric | 125.41 | 47 | 0.92 | 0.061 (0.048-0.074) | 0.001 | −0.005 | |
| Scalar | 131.53 | 54 | 0.93 | 0.056 (0.044-0.069) | 0.001 | −0.005 | |
| Anger (9) | Configural | 184.58 | 54 | 0.90 | 0.073 (0.062-0.085) | ||
| Metric | 189.55 | 62 | 0.91 | 0.067 (0.057-0.079) | 0.002 | −0.006 | |
| Scalar | 204.68 | 70 | 0.90 | 0.065 (0.055-0.076) | −0.005 | −0.002 | |
| Anticipation (8) | Configural | 148.86 | 40 | 0.91 | 0.078 (0.065-0.091) | ||
| Metric | 152.51 | 47 | 0.91 | 0.070 (0.058-0.083) | 0.003 | −0.008 | |
| Scalar | 158.06 | 54 | 0.91 | 0.065 (0.054-0.077) | 0.001 | −0.005 | |
| Attention Focusing (6) | Configural | 68.94 | 18 | 0.94 | 0.079 (0.060-0.099) | ||
| Metric | 71.82 | 23 | 0.95 | 0.069 (0.051-0.087) | 0.002 | −0.010 | |
| Scalar | 74.18 | 28 | 0.95 | 0.060 (0.044-0.077) | 0.003 | −0.009 | |
| Attention Shifting (4) | Configural | 21.06 | 4 | 0.96 | 0.097 (0.059-0.140) | ||
| Metric | 22.34 | 7 | 0.97 | 0.070 (0.038-0.103) | 0.004 | −0.027 | |
| Scalar | 23.00 | 10 | 0.97 | 0.054 (0.025-0.083) | 0.005 | −0.016 | |
| Discomfort (6) | Configural | 53.43 | 18 | 0.97 | 0.066 (0.046-0.087) | ||
| Metric | 57.41 | 23 | 0.97 | 0.058 (0.039-0.076) | 0.001 | −0.008 | |
| Scalar | 60.21 | 28 | 0.97 | 0.050 (0.033-0.068) | 0.002 | −0.008 | |
| Fear (8) | Configural | 137.43 | 40 | 0.84 | 0.073 (0.060-0.087) | ||
| Metric | 144.08 | 47 | 0.84 | 0.068 (0.055-0.080) | 0.000 | −0.005 | |
| Scalar | 152.50 | 54 | 0.84 | 0.064 (0.052-0.076) | −0.002 | −0.004 | |
| High Intensity Pleasure (8) | Configural | 241.29 | 40 | 0.88 | 0.106 (0.093-0.119) | ||
| Metric | 242.62 | 47 | 0.88 | 0.096 (0.084-0.108) | 0.003 | −0.010 | |
| Scalar | 249.77 | 54 | 0.88 | 0.090 (0.078-0.101) | 0.000 | −0.006 | |
| Impulsivity (7) | Configural | 290.78 | 28 | 0.82 | 0.144 (0.129-0.159) | ||
| Metric | 294.30 | 34 | 0.82 | 0.130 (0.117-0.144) | 0.002 | −0.014 | |
| Scalar | 299.10 | 40 | 0.82 | 0.120 (0.107-0.133) | 0.001 | −0.010 | |
| Inhibitory Control (9) | Configural | 125.17 | 54 | 0.96 | 0.054 (0.042-0.066) | ||
| Metric | 133.22 | 62 | 0.96 | 0.050 (0.039-0.062) | 0.000 | −0.004 | |
| Scalar | 140.93 | 70 | 0.96 | 0.047 (0.036-0.059) | 0.000 | −0.003 | |
| Low Intensity Pleasure (8) | Configural | 161.99 | 40 | 0.82 | 0.082 (0.069-0.096) | ||
| Metric | 172.39 | 47 | 0.81 | 0.077 (0.065-0.089) | −0.005 | −0.005 | |
| Scalar | 180.11 | 54 | 0.81 | 0.072 (0.060-0.084) | −0.001 | −0.005 | |
| Perceptual Sensitivity (6) | Configural | 49.77 | 18 | 0.98 | 0.062 (0.042-0.083) | ||
| Metric | 56.30 | 23 | 0.98 | 0.057 (0.038-0.076) | −0.001 | −0.005 | |
| Scalar | 63.73 | 28 | 0.97 | 0.053 (0.036-0.070) | −0.002 | −0.004 | |
| Sadness (9) | Configural | 109.56 | 54 | 0.90 | 0.048 (0.035-0.061) | ||
| Metric | 117.58 | 62 | 0.90 | 0.045 (0.032-0.057) | 0.000 | −0.003 | |
| Scalar | 127.03 | 70 | 0.90 | 0.042 (0.030-0.054) | −0.002 | −0.003 | |
| Shyness (8) | Configural | 374.20 | 40 | 0.92 | 0.136 (0.124-0.149) | ||
| Metric | 382.47 | 47 | 0.92 | 0.126 (0.114-0.137) | 0.000 | −0.010 | |
| Scalar | 383.64 | 54 | 0.93 | 0.116 (0.105-0.127) | 0.002 | −0.010 | |
| Smiling (7) | Configural | 52.47 | 28 | 0.96 | 0.044 (0.025-0.062) | ||
| Metric | 65.25 | 34 | 0.95 | 0.045 (0.028-0.062) | −0.010 | 0.001 | |
| Scalar | 69.52 | 40 | 0.96 | 0.041 (0.024-0.056) | 0.003 | −0.004 | |
| Soothability (7) | Configural | 135.75 | 28 | 0.92 | 0.092 (0.077-0.108) | ||
| Metric | 157.87 | 34 | 0.91 | 0.090 (0.076-0.104) | −0.012 | −0.002 | |
| Scalar | 162.39 | 40 | 0.91 | 0.082 (0.069-0.096) | 0.001 | −0.008 |
Note: Numbers in parentheses indicates number of items on the scale. CFI = Comparative Fit Index; RMSEA = Root mean square error of approzimation; CI = Confidence interval. Change in CFI and RMSEA are relative to the previous model (i.e., Metric vs. Configural; Scalar vs. Metric.