(Brief Example: John is 3 years old and has just been placed in foster care. His parents were arrested after it was discovered that they were manufacturing methamphetamines in their home. His foster parents say that he cries uncontrollably and has tremors. He does not walk well and has a limited vocabulary for his age. They wonder if he has been exposed to drugs. Apparently, John and his mother stayed in the home and rarely left. The father worked various day jobs, sold drugs, and was only home late at night. His mother was very protective and affectionate towards him but established very few rules, and he was allowed to wonder freely in the home, eat when he wanted to, and sleep wherever he wanted to.)