When two stimuli are compared, the smallest difference in stimulation that can be reliably detected by an observer is called the sensory threshold

A researcher interested in examining whether a memory training program can improve the memory skills of elderly individuals tested his program by dividing a group of elders into two groups

The group that received the memory training was the ______ group. Memory skills at the end of the training are referred to as the ______ variable. Fill in the blank with correct word

The use of which illegal drug is the slowest to decline among adults in the United States?

marijuana cocaine heroin LSD