Traditionally, disadvantaged groups, such as women and minorities, have not excelled in science and math. Often the lack of literacy and achievement in these subjects is due to the following factors: (1) cognitive differences between how the information is presented and how the students process it; (2) lack of familiarity, because of cultural…

Research indicates that the instructional conversation (IC), a dialogue between teacher and learner in which prior knowledge and experiences are woven together with new material to build higher understanding, can be an effective method for raising the low academic achievement levels of various groups of Native American students. The IC contrasts…

Over the last 15 years or so, research into measurement error has begun to consider not just whether the test items fit, but whether the people who answer the items fit. Attempts to systematically identify people who do not fit the typical pattern have led to several "person-fit statistics." This digest describes the need for such…