<p>Abstract copyright data collection owner.</p>The requirement to remember information in the presence of potentially distracting background sound is a common feature of everyday cognition. Such background sounds need not be loud to produce distraction: Laboratory studies show that sounds presented at the level of a whisper reduce cognitive efficiency dramatically. Physical changes within the sound disrupt serial short-term memory, such as those involved in remembering an unfamiliar telephone number. However, recent work has shown that other mental activities particularly those that require processing of meaning are susceptible to disruption, not from the sound's physical changes, but via its meaning. This project will study the effect o...