Stephan was excited about his newly purchased laptop. It had all the features he wanted and was really fast with a great display for his gaming. In addition, the $1,200 price tag was reasonable. The same day he took it out of the box, he saw an online special for a similar computer, on sale for only $1,000. Suddenly he began to doubt his purchase decision and worried that maybe he hadn't gotten such a good deal. Stephan was most likely experiencing10) ______