The document discusses three models of media effects: 1) Uses and Gratifications Model - This suggests that viewers can make their own choices about what media they consume and what it means to them without influence. 2) Two-Step Flow Model - This suggests that opinion leaders are first influenced by others' opinions, then influence the audience, in a two-step process. 3) Hypodermic Needle Model - This is the most effective model, similar to brainwashing, where media directly injects and passes on a specific message to audiences automatically.