Some Empirical Guidelines for Building Testlets
- Author(s):
- Wainer, Howard; Kaplan, Bruce A.; Lewis, Charles
- Publication Year:
- 1991
- Report Number:
- RR-91-56
- Source:
- ETS Research Report
- Document Type:
- Report
- Page Count:
- 10
- Subject/Key Words:
- Computer Simulation, Guidelines, Test Construction, Testlets
Abstract
A series of computer simulations were run to measure the relationship between testlet validity and the factors of item pool size and testlet length for both adaptive and linearly constructed testlets. We confirmed the generality of earlier empirical findings (Wainer, Lewis, Kaplan & Braswell, 1991) that making a testlet adaptive yields only marginal increases in aggregate validity because of the peakedness of the typical proficiency distribution. (10pp.)
Read More
- Request Copy (specify title and report number, if any)
- http://dx.doi.org/10.1002/j.2333-8504.1991.tb01423.x