The headline states a common stereotype/perception of "math people," but it does not summarize the article's message. There is absolutely no mention of social skills, general confidence, or general happiness in the article.
Remember that the study points to confidence in mathematical abilities, not general confidence in life. It's possible that confidence in mathematical abilities is linked to general confidence in life, but that is not what the point of the study is.
The headline states a common stereotype/perception of "math people," but it does not summarize the article's message. There is absolutely no mention of social skills, general confidence, or general happiness in the article.
Remember that the study points to confidence in mathematical abilities, not general confidence in life. It's possible that confidence in mathematical abilities is linked to general confidence in life, but that is not what the point of the study is.