There is a well-known relation between spatial ability and mathematics dating back to the
work of early twentieth century factor analysts. This connection is a ripe opportunity for …

The purpose of this article is to review and evaluate the range of theories proposed to
explain findings on the use of geometry in reorientation. We consider five key approaches …

Previous studies have found that children have difficulty solving proportional reasoning
problems involving discrete units until 10 to 12 years of age, but can solve parallel problems …

Mental representations of numerical magnitude are commonly thought to undergo
discontinuous change over development in the form of a “representational shift.” This idea …

This study presents evidence that humans have intuitive, perceptually based access to the
abstract fraction magnitudes instantiated by nonsymbolic ratio stimuli. Moreover, it shows …

There are many continuous quantitative dimensions in the physical world. Philosophical,
psychological, and neural work has focused mostly on space and number. However, there …

This study examines the development of children's ability to reason about proportions that
involve either discrete entities or continuous amounts. Six-, 8-and 10-year olds were …

Spatial cognition plays an essential role in everyday functioning and provides a foundation
for successful performance in scientific and technological fields. Reasoning about space …

As babies rapidly acquire motor skills that give them increasingly independent and wide-
ranging access to the environment over the first two years of human life, they decrease their …

A goal in the study of spatial development is to answer, with regard to this domain, some of
the classic questions in the history of psychology, biology, and philosophy: the extent to …