And if so, why do Costco workers draw smiley faces on receipts ... over seeing a smiley face on their Costco receipt. And, hey, we can’t blame ’em! In case you were wondering, Costco isn ...

Forbes contributors publish independent expert analyses and insights. Alice G. Walton, PhD is a writer who covers health and mental health. This article is more than 7 years old. In a simple but ...

Smiley faces may seem benign, but typing them in work emails may be doing more harm than good. In a new study published in the journal Social Psychological and Personality Science, researchers ...