popularity of shared parenting, or equal parenting time (EPT), has increased greatly in the past ten years. In Spain in 2022, for instance, 'Due to legal reforms, equal parenting time (EPT) laws in Spain now apply to approximately 40% of all divorces.' The frequency of shared parenting versus sole custody varies across countries, being most common in Scandinavia.

In a comparative survey of 34 western countries conducted from 2005 to 2006, the proportion of children aged 11 to 15 living in a shared parenting arrangement versus sole custody