Quote:
Lets take a beer advert. The person in the advert drinking the beer will be seen as successful, probably has lots of friends or has a sexy girlfriend.
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btw you make a confusion between the halo effect and consonance
http://en.wikipedia.org/wiki/Halo_effect
https://en.wikipedia.org/wiki/Cognitive_dissonance
Basically consonance is when everything is conform to your vision of the world (that can basically be everything).