halo effect
The halo effect is the cognitive sleight of hand that elevates a fleeting virtue into a blanket endorsement of the whole. As if a single gleam could cast an aura over an entire personality, it conveniently conceals all flaws in its shadow. Consequently, a first impression of looks or words warps every subsequent judgment like a magic trick. In love or in business, the halo effect serves as a handy mask that hides the truth. Example: One charming smile makes even the most mundane proposal seem genius.