| ASD (n = 21) | TD (n = 35) | t value | p | Effect size Cohen’s d |
---|---|---|---|---|---|
The available percentage fixation | 95.3 ± 5.5 | 97.2 ± 3.1 | 1.45 | .157 | d = 0.47 |
Human face | Â | Â | Â | Â | Â |
 A) Still image |  |  |  |  |  |
  % eyes | 64.9 ± 22.9 | 80.9 ± 19.0 | 2.83 | .007* | d = 0.79a |
  % mouth | 11.5 ± 10.1 | 7.5 ± 8.3 | 1.59 | .118 | d = 0.45 |
 B) Blinking |  |  |  |  |  |
  % eyes | 46.7 ± 31.6 | 77.4 ± 24.1 | 3.83 | .001* | d = 1.15b |
  % mouth | 22.1 ± 19.2 | 7.0 ± 15.7 | 3.02 | .005* | d =0.89b |
 C) Mouth moving |  |  |  |  |  |
  % eyes | 36.3 ± 27.3 | 49.3 ± 21.7 | 1.96 | .055 | d = 0.55a |
  % mouth | 36.2 ± 25.7 | 27.7 ± 20.5 | 1.36 | .179 | d = 0.38 |
 D) Silent |  |  |  |  |  |
  % eyes | 28.9 ± 36.4 | 60.0 ± 31.0 | 3.40 | .001* | d = 0.96b |
  % mouth | 38.2 ± 34.6 | 17.7 ± 22.3 | 2.43 | .021* | d = 0.76a |
 E) Talking |  |  |  |  |  |
  % eyes | 37.1 ± 34.7 | 49.4 ± 27.3 | 1.48 | .145 | d = 0.42 |
  % mouth | 36.8 ± 32.4 | 28.3 ± 21.8 | 1.06 | .298 | d = 0.33 |
Biological motion | Â | Â | Â | Â | Â |
 F) Biological motion |  |  |  |  |  |
  % upright | 47.7 ± 13.4 | 52.7 ± 16.3 | 1.18 | .243 | d = 0.33 |
  % inverted | 49.7 ± 13.8 | 44.7 ± 15.6 | 1.21 | .232 | d = 0.34 |
People and geometry | Â | Â | Â | Â | Â |
 G) Same size |  |  |  |  |  |
  % people | 47.6 ± 23.1 | 67.2 ± 16.6 | 3.39 | .002* | d = 1.03b |
  % geometry | 44.7 ± 22.3 | 29.8 ± 15.9 | 2.67 | .012* | d = 0.82b |
 H) Small window |  |  |  |  |  |
  % geometry | 33.0 ± 23.9 | 21.9 ± 15.3 | 2.13 | .038** | d = 0.60a |