Researchers for frito-lay discovered that matte beige bags of potato chips picturing potatoes and other healthy ingredients in the snack do not trigger activity in the anterior cingulate cortex, an area of the brain associated with feelings of guilt, as much as shiny bags with pictures of chips. frito-lay then switched out of shiny packaging in the united states shortly thereafter. this is an example of using?

neuro marketing methods                      

Explanation:

Neuro marketing methods  is a modern marketing technique which makes use of the neuro science to apply strategies for marketing of a product in the market.

In this technique, consumers are tested in the scientific laboratories by visualizing a product and their brain activities are observed and recorded.

Some of the techniques used to understands the consumer's mind are :

1.  Eye Tracking --- looking through the consumer's eyes

2. EEG and functional MRI

3. Facial coding and smile

4. Sensory Marketing

5. Psychological methods and mind tricks

In the given context, researchers of Frito-Lay did not found any activity in the cingulate cortex when the clients are exposed to the matte bags of potato chips, they used Neuro marketing method and switched to shiny bags with pictures of chips.

Thus the answer is ---

neuro marketing methods