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The next step in documenting the validity evidence for the revised GRCD is to confirm the present results using a single daily administration, explore the potential for further item reduction, verify the scoring, and more thoroughly evaluate its construct validity in a therapeutic clinical trial.
The number of comments made at the interpretation level and the wide variation in scoring indicated a need for further item development.
This served as the basis for further item modifications.
A pre-determined arbitrary threshold of 7/10 (on average) per item was set as a guideline for further item selection.
Items' OCCs and ICCs can then be examined, and items with weak discrimination can be identified and can be considered for further item revision, or dropped from further analysis.
Similar(55)
Expert metal detectorists with experience of examining historic battlegrounds including Bosworth and Hastings were involved in the project, while a follow-up phase saw the top-soil of the 13-acre field scoured for further items.
The DIF analyses did not produce any compelling reason for the exclusion of further items.
This aimed at identifying a potentially imbalanced distribution of item difficulties, allowing the development of further items for respective difficulty levels.
For further examination, items of the Negative Symptom subscale were ranked according to their numeric slope; the item with the largest slope was ranked Number 1, the item with the second largest slope was ranked Number 2, and so on.
For further examination, items of the Positive Symptom subscale were ranked according to their numeric slope; the item with the largest slope was ranked Number 1, the item with the second largest slope was ranked Number 2, and so on.
Given the evidence of a seemingly biased measure and poorly fitting confirmatory factor analysis for the student sample, further item-level exploration was performed.
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CEO of Professional Science Editing for Scientists @ prosciediting.com