ASSESSING THE EFFECT OF COHORT,GENDER, AND RACE ON DIFFERENTIAL ITEM FUNCTIONING (DIF) IN AN ADAPTIVE TEST DESIGNED FOR MULTI-AGE GROUPS

Differential item functioning (DIF) statistics were computed using items from the Peabody Individual Achievement Test (PIAT)-Reading Comprehension subtest for children of the same age group (ages 7 through 12 respectively). The pattern of observed DIF items was determined by comparing each cohort across age groups. Differences related to race and gender were also identified within each cohort. Characteristics of DIF items were identified based on sentence length, vocabulary frequency, and density of a sentence. DIF items were more frequently associated with short sentences than with long sentences. This study explored the potential limitation in the longitudinal use of items in an adaptive test.     

Iraq: A Morally Justified Resort to War

abstract   This paper begins by accepting, for argument's sake, a number of the central criticisms raised regarding the US led war in Iraq. In the remainder of the paper, it is argued that even if these criticisms are assumed to be true, the resort to war was still morally justified, both prospectively and retrospectively. The argument is made within the context of the just war tradition. It is argued that the resort to war met the conditions of sufficient just cause, last resort and proportionality, and that any failings in regards to legitimate authority and right intention do not undermine the morality of that resort. More specifically, the case is made that: humanitarian considerations provided a sufficient just cause, questions of international law do not undermine the moral legitimacy of the US led coalition, and that concerns about the intentions of the US, even if valid, would not impact on moral judgements about the act of resorting to war. In arguing for the last point, it is determined that the right intention condition should not be included among the set of conditions that form the basis of the just war tradition.