Jeff observed a quick succession of cars moving together on the road. His first thought was that they were all a part of a convoy of some sort. Which law of perceptual organization best explains Jeff's assumption?

A major cause of falls among older adults is

A. psychotropic medications B. polypharmacy C. dyspnea D. none of the selections is correct

Researchers placed a dot of rouge on babies' noses and then had them look into a mirror. At what average age did most babies touch their noses when they saw their reflection?

3 months 6 months 9 months 18 months