Adaptive Testing
Psychometricians at the Quaternion Group have extensive experience working with adaptive testing algorithms. We have also built a suite of simulation tools that will allow us to evaluate item pools and optimize testing algorithms to ensure an optimal solution. Our adaptive algorithm toolset is very broad and include features such as:
Dynamic Entry Point
- Fixed versus variable entry
- Randomized entry across a specified performance interval
Item Selection
- Maximum information (Fischer, Kullback-Leibler)
- Stratification and blocking methods
Ability Estimation
- EAP, MLE, Bi-Weight
- Customized provisional ability estimation
Online Calibration
- Administration strategies to bring new items onto scale with less data
Other Specialized Procedures
- Content balancing
- Exposure control
- Friends and enemies
Reporting of Results