https://phys.org/news/2018-07-difference-penny-checkout-counter.html

"We looked specifically at two styles of thinking—analytic and holistic," said Lingjiang Lora Tu, Ph.D., assistant clinical professor of marketing at Baylor and the study's lead author. Chris Pullig, Ph.D., professor and chair of Baylor's marketing department, served as co-author.

Analytic thinkers, Tu explained, tend to view all the digits in a price as separate and independent, with the focal object being the left-most digit. Holistic thinkers tend to view all the digits as interconnected, with each digit being an inseparable part of the price.