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Table 2 Mean fixation percentages and group differences of each item

From: Gazefinder as a clinical supplementary tool for discriminating between autism spectrum disorder and typical development in male adolescents and adults

 

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

     

 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

     

 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

     

 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

  1. *p < .025 (.05/2); **p < .050
  2. aModerate effect size (>0.50)
  3. bHigh effect size (>0.80) (Cohen, [36])