Table 3. Comparison between each group of patients and the respective CA HC and MA HC group for the eye-tracking data.

Group comparison	Age		Number of Transitions Matrix/Responses		Latency of the first Transition Matrix/Responses		Proportion of observational time
	Patients	Controls	Group effect	[Matrix complexity*group] Interaction	Group effect	[Matrix complexity*group] Interaction	Matrix	Responses
DS / CA HC	24 years	24.3 years	p<0.001****	NS	p<0.001****	p<0.001****	p<0.001****	p<0.005***
	[14.2–38.7]	[14.3–37.6]
DS / MA HC	7.1 years	7.2 years	NS	NS	p<0.001****	NS	p<0.001****	p<0.05*
	[5.7–9.5]	[5.3–9.5]
FraX / CA HC	23.8 years	23.2 years	p<0.001****	NS	p<0.001****	p<0.001****	p<0.001****	p<0.001****
	[13.4–31.6]	[12.3–31]
FraX / MA HC	5.8 years	6.4 years	NS	NS	p<0.001****	NS	p<0.001****	p<0.001****
	[4.3–7.5]	[4.7–8.1]

CA HC: Chronological Age-matched Healthy Controls; MA HC: Mental Age-matched Healthy Controls; DS: Down’s Syndrome; FraX: Fragile X syndrome

*: p<0.05

***: p<0.005

****: p<0.001; NS: Non Significant.