Grasp Posture Alters Visual Processing Biases Near the Hands
Observers experience biases in visual processing for objects within easy reach of their hands; these biases may assist them in evaluating items that are candidates for action. I investigated the hypothesis that hand postures that afford different types of actions differentially bias vision. Across t...
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| Veröffentlicht in: | Psychological science 2015-05, Vol.26 (5), p.625-632 |
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| container_title | Psychological science |
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| creator | Thomas, Laura E. |
| description | Observers experience biases in visual processing for objects within easy reach of their hands; these biases may assist them in evaluating items that are candidates for action. I investigated the hypothesis that hand postures that afford different types of actions differentially bias vision. Across three experiments, participants performed global-motion-detection and global-form-perception tasks while their hands were positioned (a) near the display in a posture affording a power grasp, (b) near the display in a posture affording a precision grasp, or (c) in their laps. Although the power-grasp posture facilitated performance on the motion-detection task, the precision-grasp posture instead facilitated performance on the form-perception task. These results suggest that the visual system weights processing on the basis of an observer's current affordances for specific actions: Fast and forceful power grasps enhance temporal sensitivity, whereas detail-oriented precision grasps enhance spatial sensitivity. |
| doi_str_mv | 10.1177/0956797615571418 |
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These results suggest that the visual system weights processing on the basis of an observer's current affordances for specific actions: Fast and forceful power grasps enhance temporal sensitivity, whereas detail-oriented precision grasps enhance spatial sensitivity.</description><subject>Bias</subject><subject>Eyes & eyesight</subject><subject>Hand Strength - physiology</subject><subject>Hands</subject><subject>Humans</subject><subject>Information processing</subject><subject>Movement</subject><subject>Observer Variation</subject><subject>Posture</subject><subject>Posture - physiology</subject><subject>Reaction Time</subject><subject>Sensory perception</subject><subject>Social psychology</subject><subject>Visual perception</subject><subject>Visual Perception - physiology</subject><issn>0956-7976</issn><issn>1467-9280</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkc1rFTEUxYMo9lndu1EGunEz9uY7ARFq0VYo2oW6DZmZO6_zmDd55s4U_O-d4dVaC0KzCeT87slJDmMvObzl3Npj8NpYbw3X2nLF3SO24srY0gsHj9lqkctFP2DPiDYwLyvNU3YgtDNCK71i785ypF1xmWicMhYn_YiZih8dTbEvLnOqkagb1sWHLhJS8QVjLsYrLM7j0NBz9qSNPeGLm_2Qff_08dvpeXnx9ezz6clFWWsnx7JtWotQoTCxQhe5cW3dVAbBgnNQY9vMaSqHqtWi4V62HPx8ItGJpqo4yEP2fu-7m6otNjUOY4592OVuG_OvkGIX_lWG7iqs03VQShgh5Gzw5sYgp58T0hi2HdXY93HANFHgxoP0Snr-ANQBdwB-iXV0D92kKQ_zTyyUlM4ooWYK9lSdE1HG9jY3h7C0GO63OI-8vvve24E_tc1AuQcorvHOrf83fLXnNzSm_NdPaaWAC_kbZGutKA</recordid><startdate>20150501</startdate><enddate>20150501</enddate><creator>Thomas, Laura E.</creator><general>SAGE Publications</general><general>SAGE PUBLICATIONS, INC</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BJ</scope><scope>FQK</scope><scope>JBE</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20150501</creationdate><title>Grasp Posture Alters Visual Processing Biases Near the Hands</title><author>Thomas, Laura E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c583t-fdf7e0be26abe8a168fcdb6e070880cefd862b8e4f52d193f1098623e82dbb103</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Bias</topic><topic>Eyes & eyesight</topic><topic>Hand Strength - physiology</topic><topic>Hands</topic><topic>Humans</topic><topic>Information processing</topic><topic>Movement</topic><topic>Observer Variation</topic><topic>Posture</topic><topic>Posture - physiology</topic><topic>Reaction Time</topic><topic>Sensory perception</topic><topic>Social psychology</topic><topic>Visual perception</topic><topic>Visual Perception - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Thomas, Laura E.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>International Bibliography of the Social Sciences (IBSS)</collection><collection>International Bibliography of the Social Sciences</collection><collection>International Bibliography of the Social Sciences</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Psychological science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Thomas, Laura E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Grasp Posture Alters Visual Processing Biases Near the Hands</atitle><jtitle>Psychological science</jtitle><addtitle>Psychol Sci</addtitle><date>2015-05-01</date><risdate>2015</risdate><volume>26</volume><issue>5</issue><spage>625</spage><epage>632</epage><pages>625-632</pages><issn>0956-7976</issn><eissn>1467-9280</eissn><coden>PSYSET</coden><abstract>Observers experience biases in visual processing for objects within easy reach of their hands; these biases may assist them in evaluating items that are candidates for action. I investigated the hypothesis that hand postures that afford different types of actions differentially bias vision. Across three experiments, participants performed global-motion-detection and global-form-perception tasks while their hands were positioned (a) near the display in a posture affording a power grasp, (b) near the display in a posture affording a precision grasp, or (c) in their laps. Although the power-grasp posture facilitated performance on the motion-detection task, the precision-grasp posture instead facilitated performance on the form-perception task. 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| ispartof | Psychological science, 2015-05, Vol.26 (5), p.625-632 |
| issn | 0956-7976 1467-9280 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4426223 |
| source | Jstor Complete Legacy; SAGE Publications; MEDLINE |
| subjects | Bias Eyes & eyesight Hand Strength - physiology Hands Humans Information processing Movement Observer Variation Posture Posture - physiology Reaction Time Sensory perception Social psychology Visual perception Visual Perception - physiology |
| title | Grasp Posture Alters Visual Processing Biases Near the Hands |
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