Wife Acceptance Factor, Wife Approval Factor, or Wife Appeal Factor (WAF), are design elements that increase the likelihood a wife will approve the purchase of expensive consumer electronics products such as high-fidelity loudspeakers, home theater systems and personal computers. Stylish, compact, unobtrusive forms and appealing colors are commonly considered WAF. The term is a tongue-in-cheek play on electronics jargon such as "form factor" and "power factor" and derives from the gender stereotype that men are predisposed to appreciate gadgetry and performance criteria whereas women must be wooed by visual and aesthetic factors.