_________________ is the tendency for older or previously learned material to interfere with the retrieval of newer, more recently learned material

Francis was dismayed to discover that some of his football team mates where using drugs to enhance there footwork and endurance on the playing field. Which of the following drugs were the players most likely using?

A) morphine derivatives B) marijuana C) amphetamines D) barbiturates

Central deafness refers to hearing problems that originate in the

a) outer ear. b) inner ear. c) outer and middle ear. d) auditory pathways and brain.