phrenology

noun

branch of pseudoscience: assertion of human characteristics based on shape of the skull

Wiktionary

Pronunciation: /frənˈɑlədʒi/

noun

Etymology: Etymology tree English phreno- Proto-Indo-European *leǵ- Ancient Greek λόγος (lógos) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-i-eh₂ Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -λογῐ́ᾱ (-logĭ́ā)bor. Latin -logialbor. French -logiebor. English -logy English phrenology From phreno- + -logy.

The pseudoscience which studies the relationships between a person's character and the morphology (structure) of the skull.
“Phrenology involves feeling the bumps in the skull to determine an individual's psychological attributes.”
“MR. BURNS: Who could forget such a monstrous visage? She has the sloping brow and cranial bumpage of the career criminal. MR. SMITHERS: Uh, sir, phrenology was dismissed as quackery 160 years ago.”