The sights and sounds of winning on a slot machine may increase your desire to play--and your memories of winning big, according to new research by University of Alberta scientists. The study, led by ...

The sound of coins hitting the tray below, a metal-on-metal clank that makes slot machines so appealing to so many. “The biggest game that people play in casinos is slots,” said Jon Friedl, of Ohio.

For the last fiscal year, coins have accounted for less than 3% of the $50.5-billion slot machine drop, according to the Nevada Gaming Control Board. Just a handful of properties on the Strip have ...