Question Mode Multiple Choice Question As a young child, Gregory began demonstrating aggressive behavior. He would physically attack his siblings and peers, and often destroyed others' property. By middle school, Gregory had been suspended from school at least 10 times for theft, fighting, and disrespect toward his teachers. He started drinking at the age of 10 and graduated to cocaine by age 13. At age 15, he spent over 6 months in a residential treatment center after he stole a car and crashed it while under the influence. These characteristics indicate .