What do hands know about hills? Interpreting Taylor-Covill and Eves (2013) in context☆☆
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Auteurs : Frank H. DurginSource :
- Acta psychologica [ 0001-6918 ] ; 2013.
Abstract
Hills appear much steeper than they are. Although near surface slant is also exaggerated, near surfaces appear much shallower than equivalently slanted hills.
Url:
DOI: 10.1016/j.actpsy.2013.07.014
PubMed: 23938050
PubMed Central: 3870886
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">What do hands know about hills? Interpreting Taylor-Covill and Eves (2013) in context<sup><xref ref-type="fn" rid="FN1">☆☆</xref>
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<author><name sortKey="Durgin, Frank H" sort="Durgin, Frank H" uniqKey="Durgin F" first="Frank H." last="Durgin">Frank H. Durgin</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">What do hands know about hills? Interpreting Taylor-Covill and Eves (2013) in context<sup><xref ref-type="fn" rid="FN1">☆☆</xref>
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<author><name sortKey="Durgin, Frank H" sort="Durgin, Frank H" uniqKey="Durgin F" first="Frank H." last="Durgin">Frank H. Durgin</name>
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<series><title level="j">Acta psychologica</title>
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<front><div type="abstract" xml:lang="en"><p id="P1">Hills appear much steeper than they are. Although near surface slant is also exaggerated, near surfaces appear much shallower than equivalently slanted hills. <xref ref-type="bibr" rid="R43">Taylor-Covill and Eves (2013)</xref>
propose a new type of palm orientation measuring device that provides outputs that accurately reflect the physical slants of stairs and hills from 19 to 30° and also seems to accurately reflect the slants of near surfaces (25–30°). They question the validity of the observations of <xref ref-type="bibr" rid="R7">Durgin, Hajnal, Li, Tonge & Stigliani (2010)</xref>
, who observed that palm boards grossly underestimated near surfaces. Here I review our recent work on the visual and haptic perception of near surface orientation in order to place Taylor-Covill and Eves' arguments in context. I note in particular that free hand measures of real surfaces in near space show excellent calibration, but free hand measures show gross exaggeration for hills. This leads to the question of the grounds for preferring a mechanical device to a freely wielded hand. In addition I report an investigative replication of the crucial observations that led to our concerns about the value of palm boards as measures of perception and note the specific methodological details that we have accounted for in our procedures. Finally, I propose some testable hypotheses regarding how better-than-expected haptic matches to hills may arise.</p>
</div>
</front>
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<pmc article-type="article-commentary"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<pmc-dir>properties manuscript</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-journal-id">0370366</journal-id>
<journal-id journal-id-type="pubmed-jr-id">194</journal-id>
<journal-id journal-id-type="nlm-ta">Acta Psychol (Amst)</journal-id>
<journal-id journal-id-type="iso-abbrev">Acta Psychol (Amst)</journal-id>
<journal-title-group><journal-title>Acta psychologica</journal-title>
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<article-id pub-id-type="manuscript">NIHMS514714</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
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<title-group><article-title>What do hands know about hills? Interpreting Taylor-Covill and Eves (2013) in context<sup><xref ref-type="fn" rid="FN1">☆☆</xref>
</sup>
</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Durgin</surname>
<given-names>Frank H.</given-names>
</name>
<xref ref-type="corresp" rid="cor1">*</xref>
<aff id="A1">Department of Psychology, Swarthmore College, 500 College Ave, Swarthmore, PA 19081, USA</aff>
</contrib>
</contrib-group>
<author-notes><corresp id="cor1"><label>*</label>
Tel.: +1 610 328 8678; fax: +1 610 328 7814. <email>fdurgin1@swarthmore.edu</email>
</corresp>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>10</day>
<month>12</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub"><day>09</day>
<month>8</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="ppub"><month>10</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>01</day>
<month>10</month>
<year>2014</year>
</pub-date>
<volume>144</volume>
<issue>2</issue>
<elocation-id>10.1016/j.actpsy.2013.07.014</elocation-id>
<permissions><copyright-statement>© 2013 The Author. Published by Elsevier B.V. All rights reserved.</copyright-statement>
<copyright-year>2013</copyright-year>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike License, which permits non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited.</license-p>
</license>
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<abstract><p id="P1">Hills appear much steeper than they are. Although near surface slant is also exaggerated, near surfaces appear much shallower than equivalently slanted hills. <xref ref-type="bibr" rid="R43">Taylor-Covill and Eves (2013)</xref>
propose a new type of palm orientation measuring device that provides outputs that accurately reflect the physical slants of stairs and hills from 19 to 30° and also seems to accurately reflect the slants of near surfaces (25–30°). They question the validity of the observations of <xref ref-type="bibr" rid="R7">Durgin, Hajnal, Li, Tonge & Stigliani (2010)</xref>
, who observed that palm boards grossly underestimated near surfaces. Here I review our recent work on the visual and haptic perception of near surface orientation in order to place Taylor-Covill and Eves' arguments in context. I note in particular that free hand measures of real surfaces in near space show excellent calibration, but free hand measures show gross exaggeration for hills. This leads to the question of the grounds for preferring a mechanical device to a freely wielded hand. In addition I report an investigative replication of the crucial observations that led to our concerns about the value of palm boards as measures of perception and note the specific methodological details that we have accounted for in our procedures. Finally, I propose some testable hypotheses regarding how better-than-expected haptic matches to hills may arise.</p>
</abstract>
<kwd-group><kwd>Haptic perception</kwd>
<kwd>Slant</kwd>
<kwd>Space perception</kwd>
<kwd>Measurement</kwd>
<kwd>Orientation perception</kwd>
</kwd-group>
<funding-group><award-group><funding-source country="United States">National Eye Institute : NEI</funding-source>
<award-id>R15 EY021026 || EY</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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