Matt E. Jans

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This study investigates how an onscreen virtual agent's dialog capability and facial animation affect survey respondents' comprehension and engagement in "face-to-face" interviews, using questions from US government surveys whose results have far-reaching impact on national policies. In the study, 73 laboratory participants were randomly assigned to respond(More)
  • Matt Jans, Steven G Heeringa, Anne-Sophie Charest
  • 2008
We evaluated alternative approaches to imputation for univariate estimates and multivariate regression analyses of physiological health measures collected in the 2003-2004 National Health and Nutrition Examination Survey (NHANES). From the NHANES public use data files we selected 5041 respondents age 20+ who provided questionnaire or medical exam data.(More)
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