Purpose: Position effects may influence examinees' test performances in several ways and trigger other psychometric issues, such as Differential Item Functioning (DIF) .This study aims to supply test forms in which items in the test are ordered differently, depending on their difficulty level (from easy to difficult or difficult to easy), to…

The concept of variability is central to statistics. In this research report, we review mathematics education research on variability and, based on that review and on feedback from an expert panel, propose a learning progression (LP) for variability. The structure of the proposed LP consists of 5 levels of sophistication in understanding…

Purpose: The study sought to determine the hierarchical nature of reading skills. Whether reading is a "unitary" or "multi-divisible" skill is still a contentious issue. So is the hierarchical order of reading skills. Determining the hierarchy of reading skills is challenging as item difficulty is greatly influenced by factors…

Among several factors affecting the performance of testees on a test is the sequence of the test items. The present study served as an attempt to shed light on the effect of test item sequence on Iranian EFL learners' performance on a test of grammar. To achieve such a purpose, 70 language learners of English at Pooyesh Institute in Shiraz (the…

Reports on the potential problems in scoring responses to sequencing tests, the development of a computer program to overcome these difficulties, and an exploration of the value of scoring procedures. (Author/VWL)