Mark Is Clearly in Piaget's _____ Stage of Cognitive Development

question 187

Multiple Choice

Mark is clearly in Piaget's _____ stage of cognitive development. He can solve conservation problems correctly.

• A) formal operational
• B) sensorimotor
• C) preoperational
• D) concrete operational

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Definitions:

Circadian Rhythm Disorder

A disruption in the natural biological clock leading to sleep disturbances and other health problems.

Sleep Onset

The transition from wakefulness to sleep, marking the beginning of the sleep cycle.

Disorders Of Arousal

Sleep disorders that involve recurrent episodes of incomplete awakening from sleep that seem to mix elements of wakefulness and NREM sleep.

Sleep Terrors

A sleep disorder causing feelings of panic or dread typically occurring during the first hours of stage 3–4 non-rapid eye movement (NREM) sleep and lasting for 1 to 10 minutes.