Children with an older father perform less well in tests to measure brain power, whereas children with older mothers perform better.
The study, carried out by the University of Queensland, is to assess whether the increasing trend for having children later in life has any affect on the child. Over 33,000 children were testing aged eight months, and at four and seven years. The results showed that the older a child’s father was, the less well they fared in concentration, learning and memory tests.
Social and economic factors were also taken into account, although children with an older father were thought to have better access to health and education services.
Children with an older mother performed better, and the researchers suggest it could be because they live in a more nurtured environment.