Self-appraisal is subject to cognitive bias. The Lake Wobegon Effect: http://en.wikipedia.org/wiki/Lake_Wobegon#The_Lake_Wobegon_effect http://en.wikipedia.or

Self-appraisal is subject to cognitive bias. The Lake Wobegon Effect: http://en.wikipedia.org/wiki/Lake_Wobegon#The_Lake_Wobegon_effect http://en.wikipedia.org/wiki/Lake_Wobegon#The_Lake_Wobegon_e... Dunning–Kruger effect http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect