The Validation of a Developmental Scale for Seriation
- 1 July 1985
- journal article
- research article
- Published by SAGE Publications in Educational and Psychological Measurement
- Vol. 45 (2) , 321-328
- https://doi.org/10.1177/001316448504500217
Abstract
This study was concerned with the validation of the developmental Mokken scale for seriation. It was shown that the observed scale was invariant for different samples from previous research. A high correlation of .89 was found between the total score of the items on the scale and number line comprehension task (criterion variables). Stepwise multiple regression analysis revealed that a selection of two seriation tasks on the scale accounted for 76.4% of the explained variance, whereas the remaining tasks on the scale did not add significantly to the predictive validity. It was concluded that these two seriation tasks might be used for diagnostic purposes, whereas the found seriation scale consisting of six seriation tasks might be employed for the evaluation of seriation development.Keywords
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