Terms 16 PF agreeableness Allport, Gordon Big Five cardinal dispositions Cattell, Raymond central dispositions character choleric common traits conscientiousness ectomorphic endomorphic extroversion Eysenck, Hans Eysenck's PEN facets factor analysis Galen Gall, Franz Galton, Francis Hippocrates humors idiographic L data latent needs lexiconic manifest needs melancholic mesomorphic morphogenic need neuroticism nomothetic openness personal dispositions phlegmatic press projective test proprium Q data sanguine Sheldon, William T data temperament Thematic Apperception Test (TAT) trait