How much time should I spend on answering each behaviral question?

Hi,

Just like the question "How many cases should I practice?", the answer here is it depends. It depends on 1) The content of your story and 2) The body language of your interviewer.

45-60 seconds is a good indicator for what you should aim for.

However, much more important is: Did you tell your story with an appropriate level of detail to demonstrate your thinking and "wow factor" but also stick only to the relevant, need-to-know points?

This depends on the firm.

At McKinsey, this part of the interview typically takes around 25 minutes.  So feel free to expand quite a bit.  Just spend your time not on the situation and background, but rather on the point you are trying to make, what you are trying to reveal about yourself. Easy to lose the interviewer.

At other firms, your answers can be much more brief. 

Always be structured.  Use a framework like STAR.  And don't spend too much time up front.  

You'll be fine!

Dear A,

Usually it's ok 1- 2 minute maximum. If your answer is longer, make sure before that it's structured enough and quite significant for takin g so much time in your interview. 

Best,
André