ERIC Number: EJ823688
Record Type: Journal
Publication Date: 2008-Oct
Abstractor: As Provided
Reference Count: 0
Object Substitution Masking: When Does Mask Preview Work?
Lim, Stephen Wee Hun; Chua, Fook K.
Journal of Experimental Psychology: Human Perception and Performance, v34 n5 p1108-1115 Oct 2008
When a target is enclosed by a 4-dot mask that persists after the target disappears, target identification is worse than it is when the mask terminates with the target. This masking effect is attributed to object substitution masking (OSM). Previewing the mask, however, attenuates OSM. This study investigated specific conditions under which mask preview was, or was not, effective in attenuating masking. In Experiment 1, the interstimulus interval (ISI) between previewed mask offset and target presentation was manipulated. The basic preview effect was replicated; neither ISI nor preview duration influenced target identification performance. In Experiment 2, mask configurations were manipulated. When the mask configuration at preview matched that at target presentation, the preview effect was replicated. New evidence of ineffective mask preview was found: When the two configurations did not match, performance declined. Yet, when the ISI between previewed mask offset and target presentation was removed such that the mask underwent apparent motion, preview was effective despite the configuration mismatch. An interpretation based on object representations provides an excellent account of these data.
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
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