title: Visual search and coordination changes in response to video and point-light demonstrations without KR.
abstract: The authors examined the observational learning of 24 participants whom they constrained to use the model by removing intrinsic visual knowledge of results (KR). Matched participants assigned to video (VID), point-light (PL), and no-model (CON) groups performed a soccer-chipping task in which vision was occluded at ball contact. Pre- and posttests were interspersed with alternating periods of demonstration and acquisition. The authors assessed delayed retention 2-3 days later. In support of the visual perception perspective, the participants who observed the models showed immediate and enduring changes to more closely imitate the model's relative motion. While observing the demonstration, the PL group participants were more selective in their visual search than were the VID group participants but did not perform more accurately or learn more.
authors.affiliation: Department of Health Professions, Physical Education, Recreation & Leisure Studies, Montclair State University, Montclair, NJ 07403, USA. hornr@mail.montclair.edu
authors.forename: R R
authors.initials: RR
authors.lastname: Horn
authors.forename: A M
authors.initials: AM
authors.lastname: Williams
authors.forename: M A
authors.initials: MA
authors.lastname: Scott
authors.forename: N J
authors.initials: NJ
authors.lastname: Hodges
mesh_terms: D000328:Adult; D005260:Female; D005403:Fixation, Ocular; D006801:Humans; D007721:Knowledge of Results, Psychological; D008027:Light; D008297:Male; D009068:Movement; D011597:Psychomotor Performance; D013997:Time Factors; D014743:Videotape Recording; D014796:Visual Perception