Bruce is a middle-aged man who lives in Riverbend City, a mid-sized city in the Midwest. His daughter, Shayna lives with him while she goes to school and works a part-time job.

One morning, Bruce goes to the mailbox with his cup of coffee in hand. After opening his mail box and seeing that it’s full, he puts his coffee cup on top of the mailbox to use both hands to pull everything out. He closes the mailbox and turns right to walk down the street. A few minutes later, Shayna starts calling his name. She finds his coffee cup on the mailbox but sees no other trace of him. She freezes, looking up and down the street, unable to decide what to do next.

Question.

Briefly describe (using no more than 75 words) a classic cognitive psychology experiment and how it is currently relevant. Include a link to a video, website or article the talks about the experiment. Feel free to use a hashtag, such as the name of the experiment.