What is not a key factor in making a stressor more serious?

Tracey has been working on her dissertation for months, and the process has often been a struggle with a good deal of procrastination. But doing the final revisions over the past week, Tracey found that she was more productive than ever. What caused this change in Tracey's behavior?

a. drive reduction b. incentive motivation c. Premack principle d. goal gradient effect

________ children receive few "like best" or "like least" peer nomination, and are mostly ignored by other children

Fill in the blank with the appropriate word.