When and how to assist your children with proper sleep habits.
Sleep training is an important yet controversial topic among parents. Methodology varies widely across cultures. Teaching children quality sleeping habits are beneficial to their growth, physically and mentally.
The largest controversy stems primarily from how children should be soothed at night time. Some schools of thought believe that children should learn to self-soothe by being left alone at night time once they reach a certain age. Others believe that parents should actively soothe their children until they are lulled into sleep.
For more information, there is a Wikipedia article on the topic as well as other resources: