Question

The inability to stop thinking about a particular idea or topic is known as:

• A. Compulsive behaviour
• B. Unpleasant behaviour
• C. Obsessive behaviour
• D. Intrusive behaviour

Hint:

Thoughts that stick are obsessions; acts that repeat are compulsions.

Answer 1

The Correct Option is C

Step 1: Idea: split OCD into thought and act
Think of two boxes. One box holds thoughts that stick. The other box holds acts that repeat.

Step 2: Place the given definition
The question speaks of thinking about an idea that cannot be stopped. That belongs in the thought box, which is called obsession.

Step 3: Test option (1)
Compulsive belongs to the act box. It cannot be the answer.

Step 4: Test option (2)
Unpleasant behaviour is just an everyday phrase and not a term of the syllabus. It cannot be the answer.

Step 5: Test option (3)
Obsessive behaviour is the thought box. It fits the definition, so it is the answer.

Step 6: Test option (4)
Intrusive only tells us the thoughts arrive unwanted. It describes a feature, not the named condition, so it is not the answer.

Final Answer:
Option (3), obsessive behaviour, is the answer. \[ \boxed{\text{Option (3)}} \]