(REUTERS) - Men who pass a screening process and donate to sperm banks in Sweden score better on personality measures, such as responsibility, confidence and self-acceptance, than other men in their peer group, according to a Swedish study.
Sweden was the first country to pass a so-called non-anonymous law, which entitles children to contact the sperm donor if they choose. Britain, Australia and other nations also require that donors consent to being contacted.
The United States allows donors to remain anonymous and for them to get paid, unlike Sweden, where men can only volunteer.
The non-anonymous laws could be a problem for both sides since nobody can prepare themselves for their reactions if a child decides to contact the biological father, said Dr Gunilla Sydsjo, lead author of the study and a professor at Sweden's Linkoping University.