BOUNDARY EXTENSION AND MEMORY FOR AREA AND DISTANCE

  • Jon R. Courtney
  • Timothy L. Hubbard

Abstract

Memory for a previously viewed picture of a scene often includes details that might have been present just beyond the boundaries of that picture. This is known as boundary extension (Intraub & Richardson, 1989) and has been proposed to reflect the anticipatory nature of representation (Intraub, 2002). Another possible explanation of boundary extension involves changes in remembered distance or size (Hubbard, 1996). To examine whether boundary extension is due to changes in remembered distance, participants judged distances to objects in 3-D scenes. Results were consistent with previous research in memory psychophysics. To examine whether boundary extension is due to changes in remembered size, participants recalled boundaries of scenes while object size remained unchanged. Results were consistent with previous research in boundary extension. The data suggest boundary extension is not due to changes in memory for distance or size.

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