The sweet lemon effect is the phenomenon of an individual increasing the value of a goal that has been achieved in order to dilute one's inner anxiety when he fails to pursue the desired goal, thereby achieving psychological balance. According to the above definitions, Which of the following are the "sweet lemon effect":. ['Xiaoming originally wanted to buy a laptop computer, but ended up buying a tablet computer under the persuasion of a shopping guide. After using it, he was satisfied and recommended it to friends all the time.', "In the past few weeks, Xiao Hong has been distressed by her declining sales performance; but when she knew that she was still the company's sales champion, she became more relieved.", 'Xiaowen\'s math score disappointed his tutor again. In the end, the teacher could only comfort himself with "has improved compared to the last time".', "According to the coach's estimation, Xiao Zhang needs to lose weight to 60 kg to achieve the fitness effect he wants, but Xiao Zhang gave up when he reduced to 63 kg because he felt that he was sufficiently fit."]