Questar relies on disciplined, well-defined processes to strengthen our responsiveness to clients' objectives.
Our psychometricians use industry-standard software to perform the following services:
- Item analysis
- Differential Item Functioning (DIF)
- Rasch calibration, scaling, and equating
- Classic True Score analyses
- Test level analysis
- 3 Parameter Logistic and Generalized Partial Credit models
- Validity research
- Standard setting
We provide our clients with thorough documentation or summarization for each of these areas. In addition, we work with clients to design meaningful, actionable reports that can help you provide useful, accurate, and interpretable information to the various stakeholders of the testing program. Technical reports, standard-setting summaries
, research reports
, and other forms of documentation will support your testing programs and technical adequacy needs.
Consulting and Support Services
Our experienced psychometricians are also available for consultation and attendance at Technical Advisory Committee meetings and for other support services that may be needed by our clients.
Our consulting services can aid you in the use of data to help document the reliability, fairness, and validity of your assessment system in a manner that will support various reviews, including the United States Department of Education peer review.