This document discusses several advertising theories including the hierarchy of effects model, means-end theory, and visual and verbal imagery. The hierarchy of effects model outlines six steps consumers go through to purchase a product from awareness to purchase. Means-end theory examines how advertisements link product attributes to personal values through a means-end chain. Visual and verbal imagery analyzes the emphasis on visual versus verbal elements in ads and how visuals lead to more favorable attitudes. Examples are provided for each theory to illustrate how advertisers apply these concepts.