Abstract: An integrated approach on concept diagnosis is investigated in this study. Polytomous item relational structure (PIRS) is developed so that it is beyond the limitation of dichotomous items.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

Cellphones are everywhere – including, until recently, in schools. Since 2023, at least 29 states, including New York, Vermont, Florida and Texas, have passed laws that require K-12 public schools to ...