The coach could grade their performance.
Social loafing refers to the fact that a person might not produce much effort when in a group, as opposed when alone. So, these kids know that together they are pretty good, so they don't have to try hard; but when they are alone, they do. In order to prevent this, the coach might want to grade their performance, because then they will try harder.
Answer:
Explanation: Johnny is an aggressive person
Answer: A traumatic experience
Explanation: Sometimes people handle traumattic problems different , and their behavior is different. I recall from reading this book roll of thunder hear my cry that Casey was acting weird for some days after she wasn’t suppose to be up one night.