We examined transitions occurring throughout the school day in an elementary school, sampling from kindergarten, second grade, and fourth grade classrooms. Unobtrusive observations and descriptive notetaking were used to gather data during six typical school days in the second half of the school year. Data were coded by committee to categorize the…

Achieving scientific literacy is an essential outcome of science education and is comprised of knowledge of scientific content, the process of scientific inquiry, and understanding the Nature of Science (NOS; National Research Council, 1996). NOS refers to the characteristics of scientific knowledge that are derived from the results of the process…

Identifying change at the individual level is an important goal for researchers, educators, and clinicians. We present a set of statistical procedures for identifying individuals who depart from a normative change. Using Latent Change Scores models (LCS), we illustrate how the Individual Likelihood computed from a statistical model for change…

About one-quarter of Canadian adults and more than one-third of adults in the United States are obese. Obese children are at risk of becoming obese adults and can experience immediate health consequences such as psychosocial stress, elevated blood pressure and cholesterol, and abnormal glucose tolerance. Monitoring trends in childhood obesity is…

Biological kinds undergo a variety of changes during their life span, and these changes vary in degree by organism. Understanding that an organism, such as a caterpillar, maintains category identity over its life span despite dramatic changes is a key concept in biological reasoning. At present, we know little about the developmental trajectory of…

Looking away from an interlocutor's face during demanding cognitive activity can help adults and children answer challenging mental-arithmetic and verbal-reasoning questions (Glenberg, Schroeder, & Robertson, 1998; Phelps, Doherty-Sneddon, & Warnock, 2006). Whilst such "gaze aversion" (GA) is used far less by 5-year-old schoolchildren, its use…