TAMMY J. TRIERWEILER
Traverse City,MI
Summary
Well-rounded, articulate and highly trained professional with experience in strategic decision making, presentation of results, and operationalism of future business strategies based on user feedback and business needs. Strong methodological background with over 20 years of experience in research methods and design, including but not limited to survey creation and analyses, Bayesian methods, general linear models, factor analysis (PCA, CFA) as well as MCMC methods. Expertly trained in Psychology and assessments, psychometrics, computer science and data science.
Overview
17
17
years of professional experience
Work History
Vice President of Psychometrics
Assessment Systems Corporation (ASC)
03.2023 - Current
- Established goals for consulting and psychometrics initiatives and increased revenue threefold for multiple projectss.
- Responsible for deliverables and outcomes for million dollar business contracts.
- Managed operational workflow related to test development and psychometrics to lower costs and increase efficiency.
- Established and maintained strong relationships with clients, vendors and strategic partners.
- Directed technological improvements, reducing waste and business bottlenecks.
- Demonstrated proficient leadership skills to motivate employees and build competent teams.
- Clarified roles, responsibilities and expectations of staff.
Certification Program Director
Optimizely
07.2021 - 02.2023
- Responsible for multiple user experience surveys from creation, implementation and analyses
- Responsible for business strategy, multiple methodologies associated with increasing partner organization involvement with marketing products
- Managed, developed and operationalized 5 new certification assessments to help increase program validity, visibility and growth revenue.
- Developed and implemented program goals and objectives, establishing specific and measurable outcomes aligned with organization's overall mission.
- Provided ongoing direction and leadership for program operations
Research Scientist/Senior Measurement Scientist
Law School Admission Council, LSAC
08.2015 - 04.2021
- Responsible for statistical design, operational analyses (e.g., item analyses, differential item functioning, scaling and equating, and scoring), both ad- and post-hoc analyses related to the LSAC operational test
- Survey design and analyses related to LSAC products
- Responsible for statistical design of research reports including methods such as regression, factor analysis, and other specialized methods
- Developed new psychometric tools and products that supported the mission of LSAC
Psychometrician
Prometric
11.2013 - 08.2015
- Psychometric lead for various certification examinations in the healthcare, financial, and global industries
- Designed, operationalized and led several programs using several methodologies (CTT, IRT, LOFT)
Executive Director of Psychometrics & Assessments
Educational Records Bureau
09.2012 - 08.2013
- Designed and managed statistical analyses for internal programs (i.e., item analyses, normative analyses and CAT algorithm development quality control analyses)
- Conducted and presented research (e.g. Validity, Usability studies) to support internal ERB programs related to admissions and achievement tests
- Developed and reviewed RFP requests, budget plans, and scopes of work for external and partner vendors.
Associate Psychometrician
Educational Testing Service, ETS
01.2010 - 09.2012
- Lead psychometrician for K-12 and Global large scale assessment programs
- Responsible for psychometric test design related to both multiple choice, mixed format assessments
- Designed and conducted statistical analyses for evaluation of operational data related to validity and implementation of best psychometric models
Psychometric Consultant/Data Analyst
Measurement Incorporated Evaluation Services
01.2008 - 12.2009
- Maintained and analyzed state assessment data for multiple projects at the aggregate and student level using hierarchical linear models and growth models
- Coordinated multiple projects and acted as the primary liaison between state and local level project directors and Measurement Incorporated’s evaluation staff
- Designed and collaborated on technical reports for state and federal evaluation contracts and RFP responses.
Psychometric Consultant/Data Analyst
Princeton University & NCAA
09.2006 - 12.2009
- Collected, maintained and analyzed student level admissions data over five-year time frame.
- Responsible for analyses design and implementation.
Education
Master of Science - Data Science
University of Pennsylvania School of Engineering
Philadelphia, PA05.2025
Master of Science - MCIT
University of Pennsylvania School of Engineering
Philadelphia, PA12.2023
Doctorate - Psychometrics
Fordham University
Bronx, NY02.2010
Masters of Arts - Forensic Psychology
John Jay College of Criminal Justice
NY, New York02.2006
Bachelor of Arts - Psychology
John Jay College of Criminal Justice
NY, New York02.2002
Skills
METHODS & TOOLS
- Survey Design and Sampling (Advanced)
- PCA/FA E(Expert)
- GLM [Regression, Univariate, Multivariate] (Expert)
- Bayesian Methods/MCMC
- SAS /SPSS/R
- LISREL/MPLUS
- JAVA/C
- PYTHON
- JUPYTER NOTEBOOKS/COLAB/ANACONDA
Affiliations
National Council on Measurement in Education
American Educational Research Association
Psychometric Society
Timeline
Vice President of Psychometrics
Assessment Systems Corporation (ASC)
03.2023 - Current
Certification Program Director
Optimizely
07.2021 - 02.2023
Research Scientist/Senior Measurement Scientist
Law School Admission Council, LSAC
08.2015 - 04.2021
Psychometrician
Prometric
11.2013 - 08.2015
Executive Director of Psychometrics & Assessments
Educational Records Bureau
09.2012 - 08.2013
Associate Psychometrician
Educational Testing Service, ETS
01.2010 - 09.2012
Psychometric Consultant/Data Analyst
Measurement Incorporated Evaluation Services
01.2008 - 12.2009
Psychometric Consultant/Data Analyst
Princeton University & NCAA
09.2006 - 12.2009
Master of Science - Data Science
University of Pennsylvania School of Engineering
Master of Science - MCIT
University of Pennsylvania School of Engineering
Doctorate - Psychometrics
Fordham University
Masters of Arts - Forensic Psychology
John Jay College of Criminal Justice
Bachelor of Arts - Psychology
John Jay College of Criminal Justice
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