Location cueing can facilitate response times when target-detection tasks a
re performed. A target-detection experiment was conducted with inexperience
d participants to determine whether or not the magnitude of facilitative lo
cation cueing effects would change as a function of practice. Over the cour
se of five test sessions, these effects attenuated. This suggests that prac
tice decreases the influence of location cues on visual search performance
and attentional processing. We propose that when participants perform cued
visual search experiments and become familiar with potential target locatio
ns as a result of extended practice and automaticity, these locations are e
ncoded in spatial memory by an operation called spatial indexing.