Abdul is a 47-year-old man who

lives alone and is described by his neighbours as somewhat cold-hearted. Abdul

seldom responds to greetings, and his gate is forever locked. He does not

attend social gatherings or community meetings and does not have friends. Since

he arrived in the neighbourhood over 15 years ago, his neighbours have never

seen him with friends, a girlfriend or any other visitor. Abdul spends most of

his time cleaning the yard and watering his marijuana garden. One of his

neighbours once rebuked him for his silence after trying to have a conversation

with him, but he seemed unbothered and continued with his garden duties.  What diagnosis would you likely assign to

Abdul?