______ Designs Examine Changes in a Participant or Group Across

question 35

Multiple Choice

______ designs examine changes in a participant or group across time, often over many years.

• A) Cross-sectional
• B) ABAB
• C) Analog
• D) Longitudinal

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Definitions:

Sleep

A naturally occurring condition of the mind and body where consciousness is altered, sensory activities are largely reduced, and almost all voluntary muscles are inhibited.

Circadian Rhythms

Biological processes that display an endogenous, entrainable oscillation of about 24 hours, affecting various physiological processes in living organisms.

Melatonin

A hormone produced by the pineal gland that regulates sleep and wakefulness.

Hormone

A chemical substance produced in the body that controls and regulates the activity of certain cells or organs.