caa a22 4500 475788621 CHVBK 20180406123705.0 cr unu---uuuuu 170329e20001001xx s 000 0 eng 10.1007/s004260000035 doi (NATIONALLICENCE)springer-10.1007/s004260000035 Vertical versus horizontal spatial compatibility: Right-left prevalence with bimanual responses [Elektronische Daten] [Kim-Phuong L. Vu, Robert W. Proctor, David F. Pick] For two-choice tasks in which stimulus and response locations vary along horizontal and vertical dimensions, the spatial compatibility effect is often stronger on the horizontal than vertical dimension. Umiltà and Nicoletti [(1990) Spatial stimulus-response compatibility (pp. 89-116). Amsterdam: North-Holland] attributed this right-left prevalence effect to an inability to code vertical location when horizontal codes are present simultaneously. Hommel [(1996) Perception & Psychophysics, 43, 102-110] suggested instead that it reflects a voluntary strategy. This study reports four experiments that examine this issue. Experiment 1 was a conceptual replication of Hommel's Experiment 1, with responses made on a numeric keypad and subjects instructed in terms of the vertical or horizontal dimension. The results replicated Hommel's findings that showed a right-left advantage with horizontal instructions; however, with vertical instructions, we found a benefit of vertical compatibility alone that he did not. This benefit for vertical compatibility alone was eliminated in Experiment 2 using a varied practice schedule similar to that used by Hommel. Experiment 3 showed right-left prevalence and a benefit of vertical compatibility alone, even with varied practice and vertical instructions, when subjects responded on perpendicularly arranged handgrips. These benefits were eliminated in Experiment 4 using Hommel's method of urging subjects to respond only in terms of the instructed dimension. With bimanual responses, right-left prevalence is a robust phenomenon that is evident when comparing across vertical and horizontal instructions and, when the right-left distinction is relatively salient, within the vertical instructions condition alone. Springer-Verlag Berlin Heidelberg, 2000 Vu Kim-Phuong L. California State University Long Beach, Long Beach, California, USA, US aut Proctor Robert W. Department of Psychological Sciences, Purdue University, West Lafayette, IN 47907-1364, USA Tel.: +1-765-4940784; Fax: +1-765-4961264 e-mail: proctor@psych.purdue.edu, US aut Pick David F. Purdue University Calumet, Hammond, Indiana, USA, US aut https://doi.org/10.1007/s004260000035 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s004260000035 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vu Kim-Phuong L. California State University Long Beach, Long Beach, California, USA, US aut NATIONALLICENCE 700 1- Proctor Robert W. Department of Psychological Sciences, Purdue University, West Lafayette, IN 47907-1364, USA Tel.: +1-765-4940784; Fax: +1-765-4961264 e-mail: proctor@psych.purdue.edu, US aut NATIONALLICENCE 700 1- Pick David F. Purdue University Calumet, Hammond, Indiana, USA, US aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer