individual differences

Question 1

principles of individual differences

Answer 1

• Focuses on what makes people unique, often
  investigating those whose behaviour is abnormal
• Tries to measure differences between people
  through psychometric tests (personality,
  intelligence, etc.)

Question 2

concepts of individual differences

Answer 2

measuring differences, theory of mind,
native intellectual ability, understanding mental
disorders

Question 3

applications

Answer 3

• One application is teaching children with autism
  to be able to recognise more complex emotions
  so they can overcome their deficits in theory of
  mind.
• developing psychometric tests to measure personality or intelligence as a way of testing peoples suitability for job roles or suitability within a team (or when scouting for sports teams)