Today's debate: family size

It used to be thought that as a country gets richer, life expectancy rises, the birthrate falls, and you end up with too few people of working age to support an ageing population.

New research at the University of Pennsylvania in the US suggests that, even in wealthy countries, birthrates, having fallen, then rise again.

Whether that really is the case, the question remains: should people try and have lots of children, or take efforts to limit family size?

In such debates, we normally hear from fathers and mothers, so our correspondent James Afedo in Ghana went out and asked the children.