Conventions of a TV advert: - Product placement - Jingle (recognisable music) - Slogan - Logo Advertising slots Broadcast time slots cost advertisers different amounts:a prime time slot will be more expensive than broadcasting in a slot during an afternoon. The target demographic of the audience(social,economic,and cultural context)such as age,ethnicity,gender,location,economic status. The target psychographic of the audience (social,cultural context) How well known/established the product or brand is. The intended values,attitudes and beliefs of a brand. The form(TV advertising has some different convention to print etc),length and time it runs. Call to action- Lastly, an effective commercial makes it clear what it wants you to do next, whether it's to visit a website,lease a car, or buy some candy.