The computer assisted testing has proven to be an efficient and effective way to evaluate students‟ learning status such that proper tutoring strategies can be adopted to improve their learning performance. In a testing system, the quality of the test items will considerably affect the accuracy of a test; therefore, several measures have been proposed to represent the quality of each test item,...

When required to identify the orientation of an item outside the center of the visual field, the mean orientation predicts performance better than the orientation of any individual item in that region. Here I examine whether the visual system also preserves the variance of orientations in these so-called "crowded" displays. In Experiment 1, I determined the separation between items necessary to...

We taught 3 children with autism to raise a hand or keep both hands down depending on their status (e.g., having heard a target word, possessing a specific item) using modeling, prompting, and reinforcement. All 3 children acquired accurate hand-raising skills in response to progressively more difficult discrimination tasks during group instruction. The implications for preparing children for g...

Some rights reserved. For more information, please see the item record link above. Title Age-related Sexual Dimorphism in Temporal Discrimination and in Adult-onset Dystonia Suggests GABAergic Mechanisms Author(s) Butler, John S.; Beiser, Ines M.; Williams, Laura; McGovern, Eavan; O'Riordan, Sean; Hutchinson, Michael; et al. Publication date 2015-12 Publication information Frontiers in Neurolog...

Objective This study aims to offer a new approach for quantifying severity of traditional Chinese medicine pattern with multidimensional analysis methods. Methods A scale and theoretical models were constructed based on the definition of liver stagnation spleen deficiency pattern. Clinical data of 344 IBS-D patients from a cross-sectional study was used for feature validation of the model. Co...

The dorsal hippocampus is crucial for mammalian spatial memory, but its exact role in item memory is still hotly debated. Recent evidence in humans suggested that the hippocampus might be selectively involved in item short-term memory to deal with an increasing memory load. In this study, we sought to test this hypothesis. To this aim we developed a novel behavioral procedure to study object me...

While computerized adaptive tests have enjoyed tremendous growth in the past decade, satisfactory solutions for many important problems are still unavailable. Among these problems, a critical one is the control of item exposure rate. Because adaptive algorithms are designed to select optimal items, they tend to choose items with high discriminating power. Thus, these items are selected far more...

abstract introduction: the aim of this study validating and investigating reliability ‎of the eating attitude test (garner & garfinkel, 1979).‎ methods: 100 randomly selected student of shahid beheshti university ‎participated in this study. applied methods were: item analysis (degree of ‎difficulty, discrimination coefficient, loop method), construct validity ‎‎(confirmative factor analysis, i...

In acupuncture therapy, diagnosis, acupoints, and stimulation for patients with the same illness are often inconsistent among between Traditional Chinese Medicine (TCM) practitioners. This is in part due to the paucity of evidence-based diagnostic methods in TCM. To solve this problem, establishment of validated diagnostic tool is inevitable. We first applied the Item Response Theory (IRT) mode...

BACKGROUND The study aimed to validate a scale to assess the severity of "Yin deficiency, intestine heat" pattern of functional constipation based on the modern test theory. METHODS Pooled longitudinal data of 237 patients with "Yin deficiency, intestine heat" pattern of constipation from a prospective cohort study were used to validate the scale. Exploratory factor analysis was used to exami...