After Reading the Description Below, Determine Whether the Study Is

question 6

Essay

After reading the description below, determine whether the study is an observationalor experimental study. Justify your answer with specific references to theinformation in the study."Before expanding the regional airport, children living nearby were determinedto be in one of two aircraft-noise groups (i) aircraft noise at present or (ii)aircraft noise would come with the expansion. Three hundred twenty-sixchildren (mean age = 10.4 years) took part in three data-collection waves, onebefore and two after the expansion of the airports. After the expansion, long-term memory and reading were found to be impaired in the group newlyexposed to aircraft noise."

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Definitions:

Delta Waves

Slow brainwaves predominantly seen in deep sleep that are associated with healing, dreaming, and detached awareness.

NREM-3 (N3)

A stage of sleep that is deep and restorative, during which it is difficult to awaken someone; also known as slow-wave sleep.

Alpha Waves

Brainwaves detected by an EEG that are associated with a state of wakeful relaxation, typically present when a person's eyes are closed but they are awake.

Delta Waves

Are the slowest type of brainwave, primarily associated with deep sleep and aid in healing and regeneration within the body.