Explainer: What's behind personality types A & B and are they still relevant?

How would you describe your personality?

Are you the typical Type A? Competitive, stressed and always aiming for perfection? Or Type B? Relaxed, creative and chilled. These personality classifications first emerged in the fifties.

So how relevant are they today and what about the lesser used Type C personality? 

Psychologist Cailin Jordan joins Emile Donovan.

Photo: 123rf.com