Title page for ETD etd-03272012-190237


Type of Document Master's Thesis
Author Ory, Justin Hull
Author's Email Address jory4@lsu.edu
URN etd-03272012-190237
Title Examining Reliability and Validity of the RoadSign Perception Test
Degree Master of Arts (M.A.)
Department Psychology
Advisory Committee
Advisor Name Title
Gouvier, William D Committee Chair
Cohen, Alex S Committee Member
Matthews, Russell A Committee Member
Keywords
  • internal consistency
  • coefficient alpha
  • construct validity
  • validity
  • cronbach's alpha
  • rtt
  • test-retest
  • reliability
  • psychological testing
  • Neuropsychology
  • driving
  • visual
  • visuo*
  • working memory
  • Roadsign Perception Test
  • RSPT
  • attention
Date of Defense 2011-12-12
Availability unrestricted
Abstract
The Road Sign Perception Test (RSPT) is a newly developed assessment procedure related to driver advisement, and its psychometric properties have not yet been examined systematically. The present study examined the construct validity and the reliability of RSPT measurements. Cronbach’s α and test-retest reliability statistics were completed, as were correlations reflecting on the test’s construct validity. Results indicated that the RSPT possesses marginal test-retest reliability, adequate internal consistency for duration of stimulus presentation and for specific stimuli, but low for number of signs presented. RSPT performance was significantly correlated with convergent variables measuring aspects of attention, working memory, and spatial perception and orientation, all predictors of driving performance. Divergent variables measuring verbal intelligence, current mood, and handedness were not significantly correlated with RSPT performance. Since there is no normative data available for the RSPT, all of the comparisons for this study used raw accuracy scores which are naturally more variable than comparisons made between standardized scores, potentially lowering the attained reliability and setting the upper limit for observed validity. Overall, the results indicate that the RSPT will be a promising new instrument once it is completed.
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