This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Impaired "anticipatory posture" is seen in 
Select and explain. 
A. Erb's palsy, B. Autism, C. ADHD, D. Oppositional defiant disorder
B: Autism
Answer: B: Autism 
Explanation: Posture that a child assumes when he wants to get picked up is termed as anticipatory posture. Autism is characterized by poor parental attachment ,eye contact and absence of anticipatory posture.