Advertisers use various psychological techniques to manipulate consumers into buying products, from appealing to emotions to exploiting vulnerabilities. They seek to elicit automatic reactions by targeting what elicits responses in consumers, and aim to prevent critical thinking about ads. Common strategies include pulling at heartstrings with emotional appeals, planting seeds of fear or insecurity, using humor and amusement, targeting specific audiences like teens and children, and exploiting senses like sight and smell. The goal is to form positive associations with products without consumers realizing they are being influenced.