Does a concurrent cognitive task affect the dynamics of bimanual rhythmic coordination? In-phase coordination was performed under manipulations of phase detuning and movement frequency and either singly or in combination with an arithmetic task. Predicted direction-specific shifts in stable relative phase from 0 degrees due to detuning and…

The purpose of this bulletin, one of a series designed to aid the social studies teacher, is to suggest methods for developing accurate concepts of time and chronology. The importance of these concepts and the instructional problems they present is discussed. A chart offers one basis for a program of grading the skills to be emphasized in time and…