Cue competition is a key element of many associative theories of learning. Overshadowing, an important aspect of cue competition, is a phenomenon in which learning about a cue is reduced when it is accompanied by a second cue. Overshadowing has been observed across many domains, but there has been limited investigation of overshadowing in human spatial learning. This experiment explored overshadowing using two landmarks/cues (at different distances to the goal) in a virtual water maze task with young, healthy adult participants. Experiment 1 initially examined whether the cues used were equally salient. Results indicated that both gained equal control over performance. In experiment 2, overshadowing was examined using the two cues from experiment 1. Results indicated that overshadowing occurred during spatial learning and that the near cue controlled searching significantly more than the far cue. Furthermore, the far cue appeared to have been completely ignored, suggesting that learning strategies requiring the least amount of effort were employed by participants. Evidence supporting an associative account of human spatial navigation and the influence of proximal cues was discussed.
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Oregon State Univ, Coll Vet Med, Dept Biomed Sci, Corvallis, OR 97331 USA
Oregon State Univ, Linus Pauling Inst, Corvallis, OR 97331 USAOregon State Univ, Coll Vet Med, Dept Biomed Sci, Corvallis, OR 97331 USA
Reynolds, Nadjalisse C.
Zhong, Jimmy Y.
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Georgia Inst Technol, Sch Psychol, Coll Sci, Atlanta, GA 30332 USAOregon State Univ, Coll Vet Med, Dept Biomed Sci, Corvallis, OR 97331 USA
Zhong, Jimmy Y.
Clendinen, Cherita A.
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Georgia Inst Technol, Sch Psychol, Coll Sci, Atlanta, GA 30332 USAOregon State Univ, Coll Vet Med, Dept Biomed Sci, Corvallis, OR 97331 USA
Clendinen, Cherita A.
Moffat, Scott D.
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Georgia Inst Technol, Sch Psychol, Coll Sci, Atlanta, GA 30332 USAOregon State Univ, Coll Vet Med, Dept Biomed Sci, Corvallis, OR 97331 USA
Moffat, Scott D.
Magnusson, Kathy R.
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Oregon State Univ, Coll Vet Med, Dept Biomed Sci, Corvallis, OR 97331 USA
Oregon State Univ, Linus Pauling Inst, Corvallis, OR 97331 USAOregon State Univ, Coll Vet Med, Dept Biomed Sci, Corvallis, OR 97331 USA