Glossary I

Glossary I

Item analysis refers to an assessment of whether each of the items included in a composite measure makes an independent contribution or merely duplicates the contribution of other items in the measure. Moreover, Item analysis is a set of methods used to evaluate test items. The most common techniques involve assessment of item difficulty and item discriminability.

Item characteristic curve refers to a graph prepared as part of the process of Item analysis. One graph is prepared for each test item and shows the total test score on the X axis and the proportion of test takers passing the item on the Y axis.

Item discriminability please see Discriminability.

Item homogeneity refers to the extent to which test items measure the same construct.

Item stability refers to the extent to which responses to the same test items are consistent analyzed.

IVF is the abbreviations of In vitro fertilization, a a procedure in which a woman"s ova are removed from her body, fertilized with sperm in a laboratory, and then surgically implant