What is it about?
In an experimental simulation study it was investigated whether the factor due to the item-position effect is separable from the so-called difficulty factor. Simulated data were generated according to a relational pattern obtained from a large set of reasoning data expected to include the item-position effect. The experimental part of the study was the manipulation of the item difficulties from a broad range to a zero range. The difficulty factor was expected to be observable in the broad-range data only whereas the item-position factor should be observable in both ranges. The results demonstrated that the factors were separable.
Featured Image
Why is it important?
... because some researchers think that the factor due to the item-position effect is nothing else but the so-called difficulty factor.
Perspectives
For me it is an important publication because our results regarding the implication of the item-position effect regarding validity (source of individual differences, learning, the consequences for the concept of fluid intelligence) were called into question, and a main argument was that the item-position factor is no item-position factor but a difficulty fator .
Karl Schweizer
Read the Original
This page is a summary of: Is the Factor Observed in Investigations on the Item-Position Effect Actually the Difficulty Factor?, Educational and Psychological Measurement, October 2016, SAGE Publications,
DOI: 10.1177/0013164416670711.
You can read the full text:
Contributors
The following have contributed to this page
