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Table 1 Descriptive statistics for SCT and TD group

From: The impact of sex chromosome trisomies (XXX, XXY, XYY) on gaze towards faces and affect recognition: a cross-sectional eye tracking study

  Age group N Missing Condition % valid data SCT TD F (df), p and effect size
Min-Max M (SD) Min-Max M (SD)  
Cognitive development
Norm score; Bayley-III
1–2 years 60 1    80–125 100.39 (12.18) 72–129 99.48 (14.32) F(1,58) = 0.70, p = .793; ηp 2= .01
Total IQ
WPPSI-III
3–7 years 131 7    55–138 95.48 (19.88) 72–140 109.01 (13.27) F(1,129) = −21.37, p < .001; ηp 2= .14
Receptive language
Standard score; PPVT-III
3–7 years 135 3    65–129 99.26 (14.94) 74–133 108.67 (12.44) F(1,133) = −15.86, p < .001; ηp 2= .11
Eye gaze to static faces
Proportion first fixations
1–7 years 181 18   83.3% (angry condition: 78.5%; happy condition: 88.1%) .00–1.00 .58 (.24) .00–1.00 .63 (.27) F(1,179) = −1.83, p = .089; ηp 2= .01
Eye gaze to static faces
Proportion fixation    duration
1–7 years 181 18   .00–.69 .32 (.17) .00–.73 .35 (.20) F(1,177) = −0.81, p =.185; ηp 2= .01
Eye gaze patterns to single and multiple faces
Proportion fixation duration
1–7 years 188 11 SF: face 85.3% .01–.79 .46 (.17) .04–.83 .51 (.19) F(1,186) = −4.66, p = .016; ηp 2= .02
SF: eyes .00–.59 .21 (.13) .00–.61 .23 (.15) F(1,186) = −1.48, p =.113; ηp 2= .01
MF: faces 81.5% .04–.79 .51 (.16) .04–.80 .57 (.19) F(1,186) = −5.35, p = .011; ηp 2= .03
MF: eyes .00–.45 .14 (.11) .00–.57 .18 (.13) F(1,186) = −4.56, p = .017; ηp 2= .02
Affect recognition
Raw score; NEPSY-II
3–7 years 130 8    1–23 12.07 (4.58) 1–23 13.64 (4.86) F(1,128) = −3.58, p = .031; ηp 2= .03
  1. SCT sex chromosome trisomy, TD typically developing, SF single face, MF multiple faces