I recently read in one of the foreign sites:
Adults often difficult to reach an agreement, let alone when we apply this concept to the world of a child, a small child. Inability to communicate makes that we can not find a common language and a common contact (verbal or non-verbal) is broken.
When the family of the young man appears, parents instinctively surrounded by care and love. With the eagerly expect when their child will be big enough to alone could communicate, or verbalize their need