He believes that personality differences grow out of our genetic inheritance. ... In explaining neuroticism he used physiological research (Personality, 2001). ... In later research, seven more factors were added to the list, and even later research added twelve "pathological" factors found using items from the MMPI (Minnesota Multiphasic Personality Inventory). ... Many mental health professionals today favor a combination of perspectives, acknowledging that both biology and a person's environment play important roles in personality development (Personality, 2001). ... Together they ...

• Word Count: 1240
• Approx Pages: 5
• Has Bibliography
• Grade Level: Undergraduate