In a series of studies, research participants were informed that personality test results indicated they were the type likely to end up alone later in life. as a result, they became likely to underperform on aptitude tests and likely to become aggressive toward someone who had insulted them. more; less less; more more; more less; less

In a series of studies, research participants were informed that personality test results indicated they were the type likely to end up alone later in life. as a result, they became less likely to underperform on aptitude tests and more likely to become aggressive toward someone who had insulted them.

Explanation:

The after-effects of the result given to the individuals of this study demonstrate how human behavior can be conditioned or modified by external factors, they became better in aptitude tests because they now have the impression that they need to be better and succeed by themselves because it will be only them later in life and they become less tolerant to others as well.

the answer is a wheel