Rhea Has Two Sons

Multiple Choice

Rhea has two sons.She promises to give incentives to her sons for weeding the garden every Sunday.Her elder son,Aaron,gets $1 an hour,whereas her younger son,John,gets $5 an hour for the same task.Contrary to her expectation,Rhea notices that although Aaron is paid less for the task and has probably experienced more dissonance than John,he does a better job than John.In this scenario,Aaron's attitude toward the task exemplifies:

A) the bystander effect.
B) the insufficient justification effect.
C) the less-is-better effect.
D) the picture superiority effect.