In neisser et al.'s (1979) study, participants counted passes while watching a video of a basketball game. the researchers recorded whether participants noticed a woman carry an umbrella across the screen. in this study, the proportion of passes participants noticed is a(n) variable.

In this study, the proportion of passes participants noticed is a dependent variable.

Explanation:

During a search task, researchers instruct an individual to identify or discern a visual target that is surrounded by many other distracting elements. Neisser performed this kind of search task which has a dependent variable. This dependent variable can depend on two factors: the time that the individual takes to detect the element in question during a task and the accuracy with which he/she identifies the element when it is present among many other visible elements.