What year was Allport's idiographic approach?

What year was Cattell's nomothetic approach?

What year was Eysenck's Giant 3?

When was Psychoticism added?

What year did Eysenck establish the biological causes of traits?

What year did Eysenck identify the link between the dopaminergic system and psychoticism?

What year did John discover the Big 5?

What year did Friedman and Schustack study openness to experience and extraversion?

What year did Toegel and Barsoux study agreeableness, neuroticism, and conscientiousness?

What year did Dwan and Ownsworth study neuroticism?

What year did Lynam et al. suggest both big 5 and giant 3 predict mental illness?

What year did Matthews et al. suggest extraversion and neuroticism are the most basic dimensions of personality?

What year did Scholte and DeBruyne study personality data, with findings in favour of the Giant 3?

What year did Kline and Barrett find no evidence suggesting conscientousness could fall under psychoticism?

What year did McCrae and Costa find a negative correlation between psychoticism and agreeableness / conscientiousness

What year did Noller et al. find a lack of evidence for Openness?

When did Boyle replicate Noller et al?

What year did Matthews et al. discover the skewedn data caused by psychoticism?