People often will believe that learning graphology will allow them to assess one's personality. One reason is motivational-having spent $30, they convince themselves of the value of the experience and work harder to bring about the desired outcome. This phenomenon is called

Question

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Effort justification is a cognitive dissonance phenomenon where people convince themselves that an effortful task or expense was worthwhile, often by overvaluing the outcome.

People Often Will Believe That Learning Graphology Will Allow Them