What does Consumer Behaviour / Consumer Psychology / Customer Analytics mean?

I am trying to understand the following terms better:

• Consumer Psychologist
• Consumer Behaviour
• Consumer Study
• Consumer Research
• Consumer Survey
• Customer Analytics

Studying the psychology of various stakeholders of business is extremeley important. And the consumer is perhaps one of the most important stakeholder of any business, if not for the most important stakeholder. I shall post more info soon :)
Here are some useful links:

• http://en.wikipedia.org/wiki/Consumer_behaviour
• http://www.consumerpsychologist.com/
• http://consumerpsychologist.blogspot.com/
• http://en.wikipedia.org/wiki/Experian_Consumer_Research
• http://en.wikipedia.org/wiki/Consumer_Expenditure_Survey
• http://www.customeranalytics.com/
• http://www.wharton.upenn.edu/wcai/
• http://blogs.sas.com/content/customeranalytics/
• http://www.forbes.com/sites/knowledgewharton/2012/02/02/42012/

- Gerry Som.