So that a particular search strategy can be identified as being superior, a method of evaluating the effects of a search strategy must be utilized.
To determine the effect of a search strategy that focused on eye movement,
Nickles et al. (1998) instructed his participants to use only their eyes to follow a cursor across a predetermined path.
The participants were not allowed to use any other guiding aid to assist in following the cursor with their eyes, such as a finger.