PT158 · S2 · Q20 A research psychologist used a

If repressors are better at focusing on their work and avoiding distractions, this directly explains two of their advantages: higher grades (better academic focus leads to better academic performance) and better frustration tolerance (the ability to tune out distractions is closely related to handling frustrating situations). By identifying a cognitive mechanism linked to the repression style — the ability to block out irrelevant or upsetting stimuli and concentrate — this answer provides a clear causal pathway from personality type to observed outcomes. Since it contributes to explaining the findings, it is not the correct answer to this EXCEPT question.

If repressors are less likely to alienate people by expressing emotions, this directly explains their superior social skills and likely contributes to their higher self-esteem as well. Social skills depend heavily on managing emotional expression — people who do not burden others with constant distress tend to have smoother social interactions. Better social relationships, in turn, typically boost self-esteem. The mechanism links the repression style (suppressing emotional expression) to social outcomes (fewer alienated peers) and psychological outcomes (higher self-esteem from better relationships). Since this clearly explains multiple observed characteristics, it is not the correct answer.

If parents and caregivers reward repressors more than sensitizers for showing self-control, this explains multiple findings through an external reinforcement mechanism. Greater rewards for self-control would directly boost self-esteem (positive reinforcement builds confidence), improve grades (rewarded behavior is repeated, and self-control supports academic discipline), and develop social skills (children who are rewarded for emotional regulation learn to navigate social situations more effectively). The mechanism works through environmental feedback: repressors' natural tendency to suppress emotional expression is externally reinforced, strengthening the very behaviors that produce the observed advantages. Since this explains several findings, it is not the correct answer.

If sensitizers focus more on the difficulties of succeeding in their lives, this explains several of the findings through a contrast mechanism. By dwelling on obstacles and challenges, sensitizers would naturally experience more anxiety (explaining repressors' comparative advantage in anxiety), lower self-esteem (focusing on difficulties undermines confidence), and greater frustration (attending to obstacles creates more frustration). This answer explains the gap between repressors and sensitizers not by giving repressors an advantage but by giving sensitizers a disadvantage — which amounts to the same thing in a comparative study. Since the findings are about relative performance (repressors compared to sensitizers), explaining why sensitizers perform worse is just as valid as explaining why repressors perform better. This clearly contributes to explaining the findings.