The spatial relationship between cues and targets mediates inhibition of return

Although inhibition of return (IOR) has been examined in a number of experi mental circumstances, it is not known if the number of potential target loc ations affects the magnitude of the inhibition at a cued location. To inves tigate this issue, participants were randomly presented with displays of tw o, four, or six potential target locations in a typical IOR detection task. The findings indicated that number of target locations did not affect IOR and that RTs at uncued locations varied systematically as a function of the spatial relationship between the cued and uncued location.