Update and refresh tasks for the task scanner runs.

Participants saw words appear on the screen one at a time. When participants engaged in the Refresh task they were asked to read each word. When they saw the row of dots (refresh cue) they were instructed to think back to the last word they read (refresh) only once, then continue to read the subsequent word. When participants engaged in the Update task they were asked to remember one word at a time in working memory. If they saw the word they were remembering they were to press a button. When they saw a row of triangles (update cue) they were to forget the word they were maintaining in working memory and remember the word they saw after the triangles. Again, if they saw this word subsequently in the stream of words they were to press a button indicating it matched the contents of working memory.