Re: Web surevy
Self-reporting of behaviour or consumption is notoriously inaccurate.
Factors include:
- lying
- poor memory
- biased perception
- inexact definitions
- ignorance of facts
How many people can accurately identify a nutritionist's definition of a 'serving'?
I remember a BBC survey purporting to relate intelligence to diet. The survey included hundreds of self-identified vegetarians who said they ate chicken and fish.
A third party observer or design that controls and counts things is one way of getting much more accurate data.
Biting the hand that feeds IT
