I/O Solutions: The Public Safety Selection Specialists

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Research and Development Team

David Blitz, Ph.D. (ABD)  ~ Senior Psychometrician  


Biography:

DavidBlitz, Ph.D. (ABD) specializes in quantitative methodology and computer applications in the area of personnel research and selection.  Dr. Blitz leads our assessment and psychometric capabilities in his role as Senior Psychometrician and is responsible for carrying out I/O Solutions’ research and development objectives, including test development goals and priorities, psychometrically reviewing and continually revising and updating current offerings, editing and/or producing technical materials and managing the development of new instruments. 

It is notable that Dr. Blitz has been praised by top research psychologists as “one of the top people in the country with this amount of practical experience in the field.”   Dr. Blitz’s depth of knowledge and his years of psychometric experience provide a valuable asset for I/O Solutions.

Dr. Blitz has over18 years of professional experience in corporate, consulting, public and academic/research environments and has worked in human resources management, management consulting, statistical consulting, computerized testing and measurement consulting, and healthcare measurement research. Dr. Blitz served as an adjunct faculty member at the Chicago Schoolof Professional Psychology from 2002-2005 and as an Instructor of Psychology at the Illinois Institute of Technology from 2005-2006.

He received a B.S. in Finance from the University of Illinois and a M.A. in Personnel Psychology from New York University and will receive his Ph.D. in I/O Psychology at the Illinois Institute of Technology in late winter, 2012. 

Professional Works:

 

  • Blitz, D.L.,& Morris, S.B. (2011, April). Improving the accuracy of DFIT when samplesizes are unequal. In A.D. Mead (Chair), Practical and methodologicalconsiderations for DIF/ME research. Symposium conducted at the 26thannual meeting of the Society for Industrial and Organizational Psychology,Chicago, IL.
  • Debb, S.M., & Blitz, D.L. (2010). Relating ethnic differences and quality of lifeassessment to individual psychology through the biopsychosocial model. Journalof Individual Psychology, 66(3), 270-289.
  • Debb, S.M., Blitz, D.L., & Choi, S.W. (2009). Quality of life differences in anAfrican American and Caucasian sample of chronic illness patients: Assessmentof differential item functioning. New School Psychology Bulletin, 6(1),33-42.
  • Rao, D., Debb, S., Blitz, D., Choi, S., Cella, D. (2008). Ethnic/racial differences in the health related quality of lifeof cancer patients. Journal of Pain and Symptom Management, 36(5),488-496.
  • Blitz, D.L., Lai, J.-S., & Morris, S.B. (2007, April). Evaluating polytomous DIFin a small sample using the PedsFACIT-F. In W.J. van der Linden (Chair), Raju’sdifferential functioning of items and tests (DFIT): Past and future.Symposium conducted at the annual meeting of the National Council onMeasurement in Education, Chicago, IL.
  • Debb, S.M., & Blitz, D.L. (2007, May). Relating quality of life assessment toAdlerian Psychology.  Poster presented at The 55th AnnualConference of the National Association of Adlerian Psychology, Vancouver, B.C.
  • Debb, S.M., Blitz, D.L., & Choi, S.W. (2007, August). Ethnicity anddifferential item functioning in quality of life assessment. Posterpresented at the 115th Annual Convention of the AmericanPsychological Association, San Francisco, CA.
  • Blitz, D.L., Lezotte, D.V., & Morris, S.B. (2003, April). Investigatingmultilevel effects of climate constructs in linkage research. Posterpresented at the 18th annual meeting of the Society for Industrialand Organizational Psychology, Orlando, FL.
  • Mead, A.D., & Blitz, D.L. (2003, April). Comparability of paper and computerizedpsychological measures: Review and integration. In J.M. Stanton, J.L.Burnfield, & E. Grauer (Co-chairs), Assessing equivalence of onlinenon-cognitive measures: Where research meets practice. Symposium conductedat the 18th annual meeting of the Society for Industrial and OrganizationalPsychology, Orlando, FL.
  • Raju, N.S., Drasgow, F., & Blitz, D.L. (2003, April). Maximum likelihoodestimation in validity generalization. In M.T. Brannick (Chair), Advances inmeta-analysis. Symposium conducted at the 18th annual meeting of theSociety for Industrial and Organizational Psychology, Orlando, FL.
  • Blitz, D.L., & Bergstrom, B.A. (2002, April). Conversion of a certification testto a computerized adaptive format: A case study. In N.S. Raju (Chair), Practicalissues with technology-based assessments. Practitioner Forum conducted atthe 17th annual meeting of the Society for Industrial andOrganizational Psychology, Toronto, ON, Canada.
  • Blitz, D.L., Bergstrom, B.A., & Surges-Tatum, D. (2002, April). Measuringchange in job satisfaction. Poster presented at the 83rd annualmeeting of the American Educational Research Association, New Orleans, LA.
  • Blitz, D.L., Bergstrom, B.A., Stahl, J.A., & Battle, A. S. (2002, April). UsingIRT-calibrated job task analyses to develop structured interviews. Posterpresented at the 17th annual meeting of the Society for Industrialand Organizational Psychology, Toronto, ON, Canada.
  • Bergstrom, B.A., & Blitz, D.L. (2000, April). Job task analysis: an IRT application.Poster presented at the 15th annual meeting of the Society forIndustrial and Organizational Psychology, New Orleans, LA.
  • Blitz, D.L., & Murphy, K.R. (1998). Perceptions of performance appraisal: Across-cultural examination. Unpublished manuscript, Colorado StateUniversity, Fort Collins.
  • Blitz, D.L., Raju, N.S., & Bergstrom, B.A. Using Item Response Theory foranalyzing job task data. Unpublished manuscript, Illinois Institute ofTechnology, Chicago.

COMPLETED RESEARCH SUPPORT:

“Evaluating PolytomousDIF in a Small Sample Using the PedsFACIT-F” (Blitz)  1/1/07-5/31/07

Applied Psychological Measurement Graduate Student Grant

The primary objective ofthis project was to investigate various popular methods for assessing DIF anddetermine if different assumptions or conditions such as sample size, definitionof DIF, etc. significantly impact DIF detection.

PRESENTATIONS:

  • 05/2007     Poly-SIBTEST/IRTLRDIF/DFIT(Results). NIH PROMIS Psychometric Summit. Evanston, IL. 
  • 02/2002     Item response theoryand computerized adaptive testing. American Association of Nurse Anesthetists,Assembly of School Faculty Item Writing Workshop. Scottsdale, AZ. 
  • 10/2001     Measuring change injob satisfaction. International Conference on Objective Measurement: Focus onHealth Care. University of Illinois at Chicago. 
  • 12/2000     Measuring change injob satisfaction.  Midwest ObjectiveMeasurement Symposium, MESA Measurement Laboratory, University of Chicago. 
  • 12/1999     Examining the dimensionality of job task analysis data. Midwest Objective Measurement Symposium, MESA Measurement Laboratory,University of Chicago.

  AWARDS:

  • First annual recipient ofthe Charles “Arch” Pounian Fellowship (2005). Industrial/OrganizationalPsychology Program, Illinois Institute of Technology, Chicago, IL
  • ChicagoSchool Student Association (CSSA) Faculty of the Year Award (2003-2004).  Chicago School of Professional Psychology, Chicago, IL.
  • EvanstonNorthwestern Healthcare CARE Teamwork Award (2007). Evanston Northwestern Healthcare, Evanston, IL.

 

 

 

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