Affect Heutistic

Frightening warning labels were added to cigarette packets to discourage smoking

20% of smokers reported smoking less as a result of warning labels

Our decision are often affected by the emotions we feel in the moment when making decisions. 

See the full study here :

Hammond, D., Fong, G. T., McDonald, P. W., Brown, K. S., & Cameron, R. (2004). Graphic Canadian cigarette warning labels and adverse outcomes: evidence from Canadian smokers. American journal of public health94(8), 1442-1445.

Want to know more about biases?

Blind Spot Bias

Base Rate Fallacy

Take-the-best Heurisitc

Osterich Effect