Responses to an object may be slower or less accurate if that object s
hares attributes with a recently ignored object (negative priming). So
me studies have found negative priming only if the probe trial require
d selection against a distractor stimulus. In the present experiment,
subjects responded to the location of a target (O), ignoring a distrac
tor (X) if it appeared in another location. Reaction time was slower t
o probe targets that appeared in the same location as the prime distra
ctor, regardless of whether or not the probe target was accompanied by
a distractor.