Which combination best describes the typical progression of the Big Five traits in early adulthood?

• A. Neuroticism increases and openness increases due to stress.
• B. Conscientiousness increases and neuroticism decreases due to responsibilities.
• C. Conscientiousness decreases and openness remains constant.
• D. Agreeableness increases dramatically.

Answer: (B)

In early adulthood, a key pattern researchers often observe is that people become more conscientious and less prone to negative emotions. Taking on adult responsibilities—like work, higher education, relationships, and family—tends to encourage reliable, organized, and goal-directed behavior, which shows up as an increase in conscientiousness. At the same time, as individuals develop coping skills and stability in their roles, they typically experience fewer intense negative emotions, leading to a decrease in neuroticism. This combination—rising conscientiousness and falling neuroticism—best fits the common trajectory seen in longitudinal studies of adult personality.

Other possibilities don’t align as well with the typical data. Neuroticism increasing over time isn’t the usual long-term trend, and conscientiousness decreasing runs opposite to the observed pattern as people mature into structured roles. An option suggesting a dramatic rise in agreeableness also overstates the typical change, since agreeableness tends to change only modestly.