PSY 368 Lecture 23: Lecture 23 – Attention (cont)

• School: Stony Brook University
• Department: Psychology
• Course: PSY 368
• Professor: Gregory Zelinsky

Document Summary

Subjects are asked to find a target among non-target distractors : number of distractors in display = set size, target might be present or absent in display. Does adding distractors make search harder: no not really; set size largely irrelevant to this task. Is absent search harder than present search: no, not really; present and absent judgments are about equally difficult. Search difficulty not affected by number of distractors in the display. Each obj processed at same time, so adding more obj should not increase total processing time: processed in parallel. Add distractors that are same color as target object and change orientation of distractors: search gets harder as set size increases. Search time incr w/ number of obj set size effect: target absent judgments take longer than target present judgments. Set size effect larger for target absent search than target present search.