A series of studies by Treisman and her associates examined visual search. Typically, people were told to search a visual display for either of two simple features. The search for a simple feature was called a feature search: People responded "yes" when they detected the presence of either of the specified features, either a letter S or a blue letter. In the conjunction search condition, they had to search for the combination of two features, T, and the color green. What was the typical finding?