Donders' reaction time experiment was performed using stimuli in which of the following sensory modalities?

The FDA was given additional authority over dietary supplements in 2006 to set up

A. random safety checks. B. requirements for effectiveness. C. limits on television advertising. D. an "Adverse Events Reporting" process.

Which of the following was the central focus of Muzzier Sheriff's (1936) study on conformity?

a. the auto kinetic effect b. stroboscopic motion c. motion parallax d. the Doppler effect