Marjorie Ferguson identified four common facial expressions in women's magazine covers: the "Chocolate Box" half-smile, the "Invitational" gaze with a hint of a smile, the "Super-smiler" full smile demanding attention, and the "Romantic" or seductive dreamy eyes. Trevor Millum also studied expressions, categorizing looks as "Cool" and confident, "Seductive" similar but less reserved, "Narcissistic" satisfied, and "Carefree" smiling, among others including "Maternal", "Practical", and even a blank "Catalogue" look.