In-depth study of Eysenck's hierarchical PEN model — type vs. trait distinction, three superfactors (E, N, P), neurophysiological explanations via ARAS and limbic system, EPQ measurement, and personality type frameworks from Sheldon to MBTI.
Comprehensive history of personality assessment from ancient humoral theory through the OSS assessment centres to modern Five Factor Model, covering key milestones, contributors, and related pseudo-scientific fields.
Detailed study of the four most important personality inventories — Cattell's 16PF, Costa & McCrae's NEO-PI, Myers-Briggs Type Indicator (MBTI), and the Minnesota Multiphasic Personality Inventory (MMPI-2) — including their theoretical bases, structure, uses, and limitations.
Examines the historical and modern type-based approaches to personality including Hippocrates' four-humor theory, Sheldon's somatotypes, and the Myers-Briggs Type Indicator — and why psychologists ultimately moved toward trait approaches.