statistical deviation

• statistical deviation

  refers to behavior or traits that are significantly different from the average or "normal" in a population.
• AO3

  weakness - just because the behaviour is abnormal, doesn't mean it is undesireable.

  lacks validity

  for the people who have a high IQ, it is not a bad thing, however too low may be bad
• AO3

  strength - easier to recognise the severity of abnormality

  real life application with anorexia as BMI helps doctors decide the level of intervention that is required
• AO3

  weakness - the cut off point is subjective and not clear

  depression is common so may seem normal in statistics but people may not get the help that they need