Designed to maximize measurement efficiency and improve score quality by being more precise than a conventional, static test.
The optimal test delivery engine
Echo-Adapt allows you to minimize testing time while maximizing certainty about what a test-taker knows and can do by deciding which test questions will be most relevant for each test-taker after every response.
Adaptive testing estimates the ability of each examinee at different stages of a test and optimizes the selection of items that provide the most information about a given examinee’s ability. Logically, providing an item that is much too easy or much too difficult to an examinee does not provide any useful information on the examinee’s ability. Adaptive testing uses Item Response Theory (IRT), which describes the likelihood of a examinee with a given ability to answer a test item correctly, to match item difficulty with examinee ability.
Either integrated seamlessly with Unity® online test delivery capabilities, or working directly with your test delivery platform through its IMS Global CAT Standard 1.0 certified API, Echo-Adapt is cloud-deployed for high performance, high availability and fault tolerance.
Echo-Adapt provides these advantages over fixed-length, fixed-content tests:
- Shorter tests. Because test items are selected based on the examinee’s ability, an adaptive test can gain certainty about the examinee’s ability level more quickly, greatly reducing the number of test items.
- Examinee engagement. Because test items are selected based on the examinee’s ability, an adaptive test can provide items that engage examinees–rather than items that are far too easy or far too difficult for a given examinee.
- Item security. Because test items are selected based on the examinee’s ability, an adaptive test will include different items and a different order of items across examinees, reducing the risk of cheating.
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