Final answer:
Ronald, who is artistic and enjoys new experiences, would be rated high in the personality dimension of openness according to the Five Factor Model.
Step-by-step explanation:
Ronald would be rated high on the personality dimension called openness. This dimension is characterized by traits such as creativity, artistic ability, and a willingness to try new things. People high in openness are often imaginative and curious, as opposed to being careful and regimented. They are typically open to new experiences, which aligns with Ronald's tendency to thrive on changing jobs and his liking for new things.