For learning math, non-symbolic quantity skills, symbolic skills and the mapping between number symbols and non-symbolic quantities are all important precursors. Little is known, however, about the interrelated development of these skills. The current study focuses on numerical development by: (a) investigating the structure of non-symbolic,…

A central goal of the learning sciences is to discover principles that determine the optimal amount of instructional assistance to support robust learning (Koedinger & Aleven, 2007). We examined learning outcomes from providing and withholding stepwise instructional explanations as students studied worked examples and solved physics problems. We…

We examined whether the effect that different non-cognitive and cognitive factors have on reading acquisition varies as a function of orthographic consistency. Canadian (n = 77) and Greek (n = 95) children attending kindergarten were examined on general cognitive ability, phonological sensitivity, and letter knowledge. The parents of the children…

Fourteen high-intelligence and 13 low-intelligence first-year college students worked in a structured or unstructured simulation environment to learn correlational principles. Thinking-aloud protocols indicate that high-intelligence subjects exhibit a better working method than do low-intelligence subjects, and that working method is a strong…

Characteristics of motivated and demotivated students in humanities and high and low technical secondary education were studied for 1,824 Belgian students in the eighth, tenth, or twelfth grade. Subgroups based on motivation were formed using student self-ratings, teacher ratings, and scores on predictor measures. (SLD)