The ________ threshold is the smallest amount of change in sensation that a person can detect

Reinforcement on an interval schedule is always based on

a. performance quality. b. the amount of time that has passed. c. the consistency of the behaviors. d. the number of accurate responses. e. the notion of reinforcement being unpredictable.

Marion feels tired because his breathing pauses or stops frequently while he is sleeping, waking him up gasping for breath, and being unable to fall back asleep again. This condition is called:

a. sleep apnea b. sleep aphasia c. sleep-related senescence d. insomnia