Answer:
Cultural changes over time within the united states and the Netherlands have been accompanied by "increase" in extraversion and "increase" in conscientiousness.
Step-by-step explanation:
Extraversion and conscientiousness are the parts of the five personality traits of the Big Five personality theory. Extraversion personality trait tells us about a person that at what level he is social and outgoing. And Conscientiousness tells us about the self-discipline of any person. These days cultural changes affect the extraversion and conscientiousness in the united States.