12. Whenever you go to bed you fall asleep very quickly. On
week you have a lot of stress and instead of falling asleep you
lie awake several nights in a row. Now, even though the stress
is gone, you have difficulty sleeping in your bed. Eventually,
after several nights without stress, you fall to sleep quickly.
– US- stress
– UR- lie awake/ difficulty sleeping
– CS- bed
– CR- difficulty sleeping
– Extinction- last sentence