Marjorie Ferguson identified four types of facial expressions commonly seen in British women's magazines in 1980: chocolate box, invitational, super-smiler, and romantic or sexual. Chocolate box expressions use half smiles and eye contact to engage readers. Invitational expressions use smiling eyes and smirks to intrigue readers. Super-smiler expressions depict models mid-laugh to seem natural and convey a youthful, free message. Romantic or sexual expressions attract both male and female readers by appealing to desires to be with or be the model. Trevor Millum later categorized male expressions in advertisements as carefree, practical, seductive, comic, or catalogue.