Blink and the trouble with market research

I always thought Coke and Pepsi tasted pretty much the same.  
When I read Malcolm Gladwell's book 'Blink – The Power of Thinking without Thinking' I realised just how close they once were – but are not anymore. All because of the roller coaster ride Coke took with market testing.
Mini-commercial:
In my previous post about market [...]

Market testing your promotional concept

The last post about briefing your logo designer prompted a great comment.  It was actually more of a query:  

How do you know that your logo is going to appeal to your target market?  
The short answer to this question is: test it on them.
Now, there is testing and there is testing.  You need objective [...]