Jenna is seeking therapy to overcome her fear of flying. Her therapist asks her to make a list of the aspects of flying which scare her (such as going to the airport, boarding the plane, take-off). Jenna then ranks these fears in order of severity. What is this procedure called?

Most sleep researchers distinguish among the stages of sleep on the basis of _____ recordings

a. positron emission tomography (PET) b. magnetic resonance imaging (MRI) c. electrocardiogram (ECG) d. electroencephalogram (EEG)

The American Academy of Pediatrics now suggests that babies sleep on their backs rather than on their sides or stomachs to prevent

a) rhythms. b) SIDS. c) autostimulation. d) state.