Learning about components and processes of complex biological systems is challenging and requires abstraction through mediational tools such as text, visuals, models and visualisation experiences. The 'systems concepts' necessitate building coherent relations and anticipating consequences, requiring greater mediational support. This article…

Short and long-term retention in a visual recognition memory task was studied as a function of race using 39 10th grade inner-city high school students as subjects and random polygons as stimuli. It was hypothesized that a black subject confronted by an unfamiliar white adult and requested to take a test might be more aroused than a comparable…