<mods:mods xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:METS="http://www.loc.gov/METS/" ID="etd352" xsi:schemaLocation="http://www.loc.gov/mods/v3  http://www.loc.gov/standards/mods/v3/mods-3-2.xsd">
          <mods:titleInfo>
            <mods:title>Perception of Pursuit and Evasion by 
Pedestrians</mods:title>
          </mods:titleInfo>
          <mods:name type="personal">
            <mods:namePart>Cohen, Jonathan A</mods:namePart>
            <mods:role>
              <mods:roleTerm type="text">creator</mods:roleTerm>
            </mods:role>
          </mods:name>
          <mods:originInfo>
            <mods:copyrightDate>2010</mods:copyrightDate>
          </mods:originInfo>
          <mods:physicalDescription>
            <mods:extent>xvi, 178 p.</mods:extent>
            <mods:digitalOrigin>born digital</mods:digitalOrigin>
          </mods:physicalDescription>
          <mods:note>Thesis (Ph.D. -- Brown University (2010)</mods:note>
          <mods:name type="personal">
            <mods:namePart>Warren, William</mods:namePart>
            <mods:role>
              <mods:roleTerm type="text">Director</mods:roleTerm>
            </mods:role>
          </mods:name>
          <mods:name type="personal">
            <mods:namePart>Sobel, David</mods:namePart>
            <mods:role>
              <mods:roleTerm type="text">Reader</mods:roleTerm>
            </mods:role>
          </mods:name>
          <mods:name type="personal">
            <mods:namePart>Jenkins, Odest</mods:namePart>
            <mods:role>
              <mods:roleTerm type="text">Reader</mods:roleTerm>
            </mods:role>
          </mods:name>
          <mods:name type="corporate">
            <mods:namePart>Brown University. Cognitive and 
Linguistic Sciences: Cognitive Sciences</mods:namePart>
            <mods:role>
              <mods:roleTerm type="text">sponsor</mods:roleTerm>
            </mods:role>
          </mods:name>
          <mods:genre authority="aat">theses</mods:genre>
          <mods:abstract>This dissertation presents a line of research 
that investigates the information people use to pursue and evade other 
pedestrians and to perceive whether other pedestrians are pursuing or 
evading. Three experiments were conducted in the Virtual Environment 
Navigation Laboratory (VENLab), a large ambulatory virtual environment. 
Experiment 1 presents a dynamical systems description of human pursuit 
and evasion that uses the constant bearing strategy. The steering 
dynamics model developed by Warren and colleagues (Fajen &amp; Warren, 
2003; 2007; Cohen, Bruggeman, &amp; Warren, under review) is shown to 
extend to pursuit-evasion interactions. Experiment 2 investigates 
whether the information provided by a pedestrian's contingent movement, 
trajectory, and head fixation specifies pursuit and evasion behavior. In 
this study participants interacted with a virtual avatar driven by the 
steering dynamics model in an immersive virtual environment. Pursuit is 
specified by contingent motion that preserves a constant bearing angle, 
and evasion is specified by movement that avoids a constant bearing 
angle. In addition the approach trajectory of an evading avatar is shown 
to effect the perception of evasion, and head fixation increases 
participants' sensitivity to pursuit and evasion when an avatar is 
presented at a close distance. Experiment 3 tests whether the behavior 
of multiple pedestrians is perceived sequentially or if pursuit behavior 
'pops out' in a crowd. Participants were instructed to identify a 
pursuing avatar in the presence of one, two, or three evading (i.e. 
distracter) avatars. The data support a sequential perception of 
pedestrian movement. Overall the results of this dissertation provide an 
information-based account of pedestrian pursuit-evasion 
interactions.</mods:abstract>
          <mods:subject>
            <mods:topic>pursuit-evasion</mods:topic>
          </mods:subject>
          <mods:subject>
            <mods:topic>intentional behavior</mods:topic>
          </mods:subject>
          <mods:subject authority="FAST" authorityURI="http://id.worldcat.org/fast" valueURI="http://id.worldcat.org/fast/1001722"><mods:topic>Locomotion</mods:topic></mods:subject><mods:subject authority="FAST" authorityURI="http://id.worldcat.org/fast" valueURI="http://id.worldcat.org/fast/1167688"><mods:topic>Virtual reality</mods:topic></mods:subject><mods:recordInfo>
            <mods:recordContentSource authority="marcorg">RPB</mods:recordContentSource>
            <mods:recordCreationDate encoding="iso8601">20110926</mods:recordCreationDate>
          </mods:recordInfo>
        <mods:language><mods:languageTerm type="code" authority="iso639-2b">eng</mods:languageTerm><mods:languageTerm type="text">English</mods:languageTerm></mods:language><mods:identifier type="doi">10.7301/Z0736P4M</mods:identifier><mods:accessCondition type="rights statement" xlink:href="http://rightsstatements.org/vocab/InC/1.0/">In Copyright</mods:accessCondition><mods:accessCondition type="restriction on access">Collection is open for research.</mods:accessCondition><mods:typeOfResource authority="primo">dissertations</mods:typeOfResource></mods:mods>