Tom is in a bad mood because he has just lost his cell phone, but he decides to attend his friend's party anyhow. at the party, people are laughing and having a good time, so tom immediately cheers up and joins the fun. tom's emotional change is to the result of:

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .