Richard Louv attributes parental anxiety over child safety as one of the main reasons that children don't play outdoors. Parents are afraid of their children being abducted by strangers. The fear of abduction has caused parents to not allow children to play outside unattended. A parent's busy schedule often does not allow for supervised outdoor play, so outdoor play opportunities are limited as a result.
The electronic age is another big contributing factor to Nature Deficit Disorder. Television, computers and video games are prevalent interests among children. It is not uncommon for a child to prefer playing with electronic devices over playing outdoors.
Lack of outdoor play environments is another obstacle to children playing outdoors. In many cities, there is a lack of natural settings for children to enjoy. Safe parks are often not locally available for children to play in. Even many schools have become little more than concrete jungles, with a lack of natural grass and plant life.
Homework overload can also prevent children from having time to participate in outdoor activities. A University of Michigan study revealed that children spend on average 7.5 hours more a week on homework than children did twenty years ago.