The Woodcock-Johnson® IV Tests are widely used in educational and clinical settings to assess cognitive abilities, academic achievement, and language proficiency. As a customer, you may be interested in learning more about the norming, reliability, and validity of these tests. Here's where you can find this information:

1. Norming Information: The norming information for the WJ IV™ Tests can be found in the Technical Manual, which is available on The manual provides detailed information about the sample of individuals who were tested during the development of the tests, including their age, gender, ethnicity, and geographic location. This information can help you understand how the tests were normed and how the scores are interpreted.

2. Reliability Information: The reliability of the WJ IV™ Tests is also discussed in the Technical Manual. This information includes the test-retest reliability, internal consistency, and inter-rater reliability of the tests. These statistics can help you understand how consistent the test scores are over time and across different raters.

3. Validity Information: The validity of the WJ IV™ Tests is discussed in the Technical Manual as well. This information includes evidence of content validity, criterion-related validity, and construct validity. These statistics can help you understand how well the tests measure what they are intended to measure and how they relate to other measures of cognitive abilities and academic achievement.

To access this information, simply log in to and select the RESOURCES tab from the menu. Scroll down to the Technical Manual and click on the link to download the PDF. If you have any further questions or concerns, please do not hesitate to contact our customer support team for assistance.