Brain activity that characterizes stage 1 sleep is known as _________

a) theta waves
b) REM
c) alpha waves
d) beta waves
e) delta waves

Answer: A

Psychology

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Mental activities that differ noticeably from normal waking consciousness are known as ______

a) hyperconsciousness b) unconscious states c) relaxed wakefulness d) altered states of consciousness

Psychology

When a number of experimental participants from different groups drop out of study at different

rates, this describes: A) mortality B) selection C) drop-out D) maturation

Psychology