Published in 2022, a PLOS ONE research study performed longitudinal assessments of personality changes in 7,109 Americans, aged 18 to 109, during the COVID-19 pandemic. 
It is reported that, compared to the pre-pandemic period, people became less extroverted, open, agreeable, or conscientious. What is more astonishing is that these changes were equivalent to about one decade of normative personality change if occurring during a non-COVID period.  Strikingly, younger adults showed disrupted maturity by a significant increase in neuroticism and a significant decline in agreeableness and conscientiousness.  The 5 Factors of Personality Traits
Personality is the solidified reaction mode of one’s thoughts, emotions, and actions. As people mature, their personality is relatively stable regardless of the environmental simulations….