[Solved] Twin studies have shown that genetics has the most effect on which of the Big Fiver personality traits? A)Extraversion B)Conscientiousness C)Neroticism D)Openness to experience E)Agreeableness Sandwich Generation: Individuals who are simultaneously caring for their aging parents and their own children, effectively "sandwiched" between the responsibilities for two generations. Middle Adulthood: A developmental stage that occurs roughly between the ages of 40 and 65, characterized by stable work, relationships, and a focus on personal and family well-being. Late Adulthood: The stage of life characterized by ages 65 and older, often associated with retirement and increased focus on personal relationships and leisure activities. Cross-sectional Study: A research method that analyzes data from a population, or a representative subset, at a specific point in time to make inferences about the population.