The diminishing responsiveness of sensory systems to prolonged stimulation is known as __________

What percentage of African American families is headed by a single parent?

a. 10% b. 30% c. 50% d. 70%

The finding that people will not remember a word repeated 35 times in an unattended ear during a shadowing task, but will notice their name, is consistent with __________ theories of attention

a. modern b. progressive c. late selection d. early selection