Cattell and his co-workers also developed parallel personality questionnaires to measure traits in other age-ranges, such as the Adolescent Personality Questionnaire for ages 12 to 18 years.

Of the remaining teams that administer tests, some use the 16PF (Personality Factor), which measures traits like aggressiveness and competitiveness.

In studies of women that she admits are inflammatory in their sociocultural implications, Dr. Kerstin Uvnas-Moberg, a professor of pharmacology at the Karolinska Institute in Stockholm, has found that women's scores on personality scales measuring traits like anxiety and aggression change significantly during and just after pregnancy.

Articles related to psychometrics (measuring intelligence and cognitive traits) include:

Statistical surveys are used in psychology for measuring attitudes and traits, monitoring changes in mood, checking the validity of experimental manipulations, and for a wide variety of other psychological topics.

The Big five has been preferably used, since it is able to measure different traits in personality without overlapping.

Brother Juniper works for six years on his book about the bridge collapse, trying various mathematical formulae to measure spiritual traits, with no results.

These tests, including the WISC-IV and WAIS-IV, attempt to measure traits such as general knowledge, verbal comprehension, working memory, attention/concentration, logical reasoning, and visual/spatial perception.

While some leadership scholars try to plumb the depths of rulers' psyches - or measure specific traits like charisma, motivation and emotional intelligence - others ignore personality altogether, emphasizing political systems and institutions, the reciprocal benefits of leader-follower interactions or any number of economic and social variables.