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In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: Homework can put you in a badmood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
Answer: whether mood affects their learning ability
Solution: Researchers did experiments on kids in order to find out _ .
Why? It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

New input: Article: In ancient Greek mythology we learn about a young man named Narcissus. He was so beautiful that he fell in love with his own reflection . He became obsessed , but soon realized that what he loved was not real. As a result, he became sad and died. In the place where he had stood appeared a soft yellow flower -a narcissus. This is where the word "narcissism" came from. Unfortunately, narcissism is often used to show disapproval because it is usually used to mean being self-centered and not caring about others. However, part of the reason that narcissism carries these negative meanings is that many people admire themselves in an unhealthy way. But the truth is that good self-love is necessary for our mental health, scientists say. A study published 10 years ago shows that low self-esteem is responsible for many social problems, and it can affect teenagers seriously. When they feel less confident and not as good as their classmates, teenagers are more likely to suffer from depression, commit suicide, get pregnant and bully others, according to the BBC. The other reason that narcissism is considered an ugly thing is because we are taught that we should care more about others than ourselves and that it's better to give than to receive. Thinking about others is the right thing to do, without question. But psychologists say that the love of others is actually based on self-love. If you see yourself as an unpleasant stranger, how can you be capable of making friends with anyone else? After all, you are closer to yourself than anyone else. After years of study, scientists also found that parents play a big part in building a child's self-belief. Only if the parents approve and accept their children, do they feel loved and learn to love themselves. The next time you look in the mirror, try to tell yourself that you are one of a kind. Pick out your best qualities and be proud of yourself.
Answer: can give teenagers mental health problems
Solution:
According to the text, low self-esteem _ .