Helmholtz's work was more important than Weber's in demonstrating the utility of experimentation to assess psychological events.?

Infants' visual acuity is at best a distance of ____

a. 8–14 inches b. 24–44 inches c. 8–14 feet d. 24–44 feet

The most fleeting state of arousal is

A) NREM sleep. B) REM sleep. C) drowsiness. D) quiet alertness.