During adulthood, how do expressions of personality traits tend to change?

During adulthood, expressions of personality traits tend to change on average, reflecting the natural development and maturation that occurs throughout this life stage. Studies in personality psychology suggest that while certain traits may remain stable, individuals can experience shifts in how these traits are expressed as they face new life experiences and challenges.

For instance, many people may become more conscientious and agreeable over time, as life experiences such as marriage, career responsibilities, and parenting often foster greater consideration for others and a stronger sense of duty. This average-level change signifies a shift rather than a total transformation or abandonment of personality traits, allowing for a dynamic understanding of personality throughout adulthood.

The other options suggest extremes or misconceptions about personality development. The idea that traits become more rigid and fixed implies a lack of adaptability, which does not accurately reflect the growth many individuals experience. Suggesting that they increase significantly or completely disappear overstates the changes that can occur, as personality traits generally show continuity alongside change.