Departure of the investigator who was recruiting subjects

The study ARITH22 will investigate the role of visuo-spatial attention on arithmetic abilities of children with 22q11.2 deletion syndrome.

Children with 22q11.2 deletion syndrome often have arithmetic learning disability because of magnitude representation impairment. Previous works suggested that magnitude representation impairment could be a result of endogenous visuo-spatial attention dysfunction in 22q11.2DS. Nevertheless this relationship is still poor explored. The influence of visuo-spatial abilities on arithmetic achievement could also be modulated by developmental age. The study ARITH22 will test these hypotheses thanks to magnitude comparisons tasks, in children with 22q11.2 deletion syndrome and matched children without developmental disease.

Inclusion Criteria:

• Diagnosis of 22q11.2 deletion syndrome or no developmental disease
• Aged from 4 to 11 years old
• French language

Exclusion Criteria:

• Diagnosis of intellectual deficiency according to DSM 5 criteria
• Drug prescribed for somatic condition that could influence cerebral functioning