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Colloquium Graduate School of Child Development and Education on Monday 28 November 2022

Last modified on 24-11-2022
The next Graduate School colloquium will be on Monday 28 November. Dr. Niel Smits will present recent research findings (for abstract, see below).
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Start date
28-11-2022 12:00
End date
28-11-2022 12:30


With the aim of promoting academic exchange and cooperation, we would like to invite all (research master) students, researchers and other staff members to attend the colloquium. 

Day:               Monday 28 November 2022
Time:            1pm - 1.30 pm CET
Loction:    REC-B3.09 

We look forward to seeing you at the Graduate School Colloquium!   

With kind regards, also on behalf of Niels Smits, Andries van der Ark, Annette van Maanen, Qingqing Du (q.du@uva.nlExternal link) and Jiajun Mo ( link).    


Measurement versus Prediction in Test Construction
Niels Smits, University of Amsterdam

 Two important test goals are (i) measurement: questionnaires are constructed to assign numerical values that accurately represent the test taker's attribute, and (ii) prediction: the questionnaire is constructed to give an accurate forecast of an external criterion. Construction methods aimed at measurement prescribe that items should be reliable, leading to questionnaires with high inter-item correlations. By contrast, construction methods aimed at prediction prescribe that, in addition to a high correlation with the criterion, items should have low inter-item correlations. The latter approach has often been said to produce a paradox concerning the relation between reliability and validity (Gulliksen, 1950; Lord & Novick 1969, McDonald, 1999), because a well-known result from classical test theory states that the validity of a test with respect to any criterion is bounded above by its reliability, by which it may appear more appropriate to use items with high rather than low inter-item correlations. The first goal of the present paper is to provide insight into this seemingly paradoxical situation and the second goal is to show that there is a trade-off between the measurement and prediction qualities of a questionnaire. To that end, both a theoretical exposition and an empirical illustration are presented. We claim that a trade-off will exist for any pair of test goals, and the implications for the construction of questionnaires are discussed.Graduate School Colloquia for the next academic year will take place on:       

  • 30 January 2023
  • 27 February 2023
  • 27 March 2023

Colloquiumcategorie: scriptiepresentaties