Leo J. Th. van der Kamp

Validity and Validation of Tests

Dato N.M. De Gruijter, Leo J. Th. van der Kamp, 2007 .

Longitudinal Data Analysis: Designs, Models and Methods

Leo J. Th. van der Kamp, C. Bijleveld, Catrien C. J. H. Bijleveld, 1999 .

Advances in psychological and educational measurement

Dato N.M. De Gruijter, Leo J. Th. van der Kamp, D. D. Gruijter, 1976 .

Statistical Test Theory for the Behavioral Sciences

Dato N.M. De Gruijter, Leo J. Th. van der Kamp, D. D. Gruijter, 2007 .

Television's Impact on Children's Reading Comprehension and Decoding Skills: A 3‐Year Panel Study

Tom H. A. van der Voort, Cees M. Koolstra, C. M. Koolstra, 1997 .