Are you involved in emotion recognition and facial expression analysis? These 5 tips will guarantee the best results!
1. The whole face should be visible
You may normally offer your test participants something to eat or drink during the test to make them feel comfortable. However, when eating or drinking, the test participant blocks part of the face with his/her hand and the cup/glass/spoon. So, make sure the test participant finishes his/her cup of coffee before you start the test….unless, of course, the purpose of the test is to see a reaction to a new food or beverage! There are still steps you can take to minimize interference: if testing a soda, for example, test participants could drink through a straw, which would ideally be transparent and colorless.
A tip to consider: Some people have a natural tendency to touch their face without realizing it (like the lady in the picture). You may want to warn the test participants to keep their arms on the table throughout the test in order to get the best possible results.
