From children who won't try a new food even once, to adults who enjoy foods so spicy that the pain of eating them drowns out the taste... ever wondered why we like some foods, and are disgusted by others?
Nine to Noon’s guest has delved into some of the mysteries of how and why our tastes change across cultures, and even between individuals.
Professor Paul Rozin is a prominent psychology professor, based at the University of Pennsylvania, who for decades has studied food choice considered from biological, psychological and anthropological perspectives.
Kathryn Ryan asks what determines what we eat at certain times of the day.
Dr Rozin is a member of the American Academy of Arts and Sciences and a recipient of the American Psychological Association Distinguished Scientific Contribution Award for 2007. He was an editor of the journal, Appetite, for ten years.