PSYC 330 Lecture Notes - Lecture 8: Visual Search, Personal Protective Equipment, Brute-Force Search

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 330
• Professor: Richard Wright

Document Summary

Most visual activity involves search: and is one of the top skills that degrade as you age. We know a lot about attention from search experiments. Targets with unique features are easier to find. Camouflage vs safety clothing: animals have evolved to blend in with surroundings, not be unique, so as to su(cid:396)(cid:448)i(cid:448)e a(cid:374)d (cid:374)ot (cid:271)e eate(cid:374). Also p(cid:396)edato(cid:396)s ha(cid:448)e e(cid:448)ol(cid:448)ed to (cid:271)le(cid:374)d i(cid:374) so p(cid:396)e(cid:455) do(cid:374)"t see the(cid:373) (cid:272)o(cid:373)i(cid:374)g. Set-size effect: the more surroundings objects there are around a target, target takes longer to find (we do(cid:374)"t ha(cid:448)e this effe(cid:272)t (cid:449)ith eas(cid:455) to ide(cid:374)tif(cid:455) o(cid:271)je(cid:272)ts though) Exhaustive search: inspecting an entire array (this occurs in target-absent trials, you search the entire thing to (cid:373)ake su(cid:396)e (cid:455)ou (cid:396)eall(cid:455) did(cid:374)"t see the ta(cid:396)get) Serial self-terminating search: inspection stops when target is found, rest of array is ignored. Serial search: look at 1 thing at a time. Parallel search: look at many things at the same time.