Inadequate and poor sleep quality may adversely affect the performance of children in intelligence tests suggests a research. This is an important discovery that confirms the major role of sleep in consolidating cognitive abilities said researcher Roger Godbout professor at the University of Montreal in Canada. The study involved 13 autistic children and 13 neurotypical children - children with a mean age of 10 years without an intellectual deficiency or sleep problem and who were not on medication. Read about how poor sleep quality might affect your child's IQ. Read about EQ vs IQ - which one is more important?