For students to advance beyond arithmetic, they must learn how to attend to the structure of math notation. This process can be challenging due to students' left-to-right computing tendencies. Brackets are used in mathematics to indicate precedence but can also be used as superfluous cues and perceptual grouping mechanisms in instructional…

The purpose of this study was to evaluate the effects of a Greek traditional dance programme on sensorimotor synchronization (SMS) and reaction time on primary school children (6.41 ± 0.41 yr.). We randomly assigned 61 children to either the dance group (31 children, 15 boys, 16 girls, 6.42 ± 0.40 yr.), who took part in a dance programme of 12…

Kindergartners and second, fourth, and sixth graders were shown a series of pictures that depicted an object with increasing completeness and were asked to identify the object. Found that, with increasing age, children correctly identified the object earlier in the sequence and that reaction time was longest for second graders. (BC)

It was shown that hierarchies change with development and that relative salience of a dimension is negatively associated with both reaction time of choice and number of errors on the identity task. (Authors)

Ten young males (aged 16-to-22 years) whose IQ scores ranged from 51 to 77 were compared on a simple discrimination task with ten male university students (aged 18-to-23 years) and 28 nonretarded male children (aged 7-to-11 years) in order to determine if reaction time is a consequence of mental retardation.