Growth Scale Values (GSVs)

Scales that accurately measure change over time

Many of our assessments have the capability to develop Growth Scale Values (GSVs) which are more accurate and sensitive to performance than a raw score.

GSVs:
  • Measure change relative to the examinee rather than the general population
  • Are a linear translation of the Rasch Ability Scale
  • Can be used for multi-point test items
Here’s what you should know about implementing GSVs:
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Beyond Standard Measures

Download our infographic to learn more about the facts, benefits, and advantages of implementing Growth Scale Values (GSVs)

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Using GSVs in clinical trials 

Download our additional technical resources to learn more about GSV development, interpretation, and out-of-level testing.

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Vineland™-3 tech supplement

Vineland™-II tech supplement

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Bayley®-4 GSV Technical Supplement

Bayley®–III GSV Technical Supplement

Using GSVs in clinical trials

Learn more about development, interpretation, and out-of-level testing with GSVs in the latest technical report Growth Scale Value (GSV): Theory, Development, and Applications.