User:Alsurafel/Personality psychology

Twin studies have also been important in the creation of the five factor personality model: neuroticism, extraversion, openness, agreeableness, and conscientiousness. Neuroticism and extraversion are the two most widely studied traits. Individuals scoring high in trait extraversion more often display characteristics such as impulsiveness, sociability, and activeness. Individuals scoring high in trait neuroticism are more likely to be moody, anxious, or irritable. Where as, those who score low in trait neuroticism are more likely to be peaceful and emotionally stable. Those who score high in trait openness are considered to be creative and authentic. Individuals who possess more traits in agreeableness are found to be trusting and sympathetic. Lastly, those who score high in trait conscientiousness are more organized and punctual. Identical twins, however, have higher correlations in personality traits than fraternal twins. One study measuring genetic influence on twins in five different countries found that the correlations for identical twins were .50, while for fraternal they were about .20. It is suggested that heredity and environment interact to determine one's personality

Objective personality tests are tests that gather information of one's personality based on observable actions such as standardized tests or performance tasks. Research on psychological assessment has generally found objective tests to be more valid and reliable than projective tests. Critics have pointed to the Forer effect to suggest some of these appear to be more accurate and discriminating than they really are. Issues with these tests include false reporting because there is no way to tell if an individual is answering a question honestly or accurately. Beginning around the 1940's, Raymond B. Cattell introduced the idea to use T-data (objective testing) to assist in personality research. Cattwell believed that objective tests were one of the three crucial aspects of personality assessments.

As technology has advanced, more assessments based on behavior were created. Objective personality assessments have benefited off of the rise of computer technology and it has assisted them in registering one's behavior as well as how information is being presented.