Which of the Following Uses a Quasi-Experimental Design

question 17

Multiple Choice

Which of the following uses a quasi-experimental design?

• A) A researcher compares the effects of caffeine on sleep by assigning subjects randomly into one of 3 treatment groups (5, 10 or 20 mg. doses of caffeine) and recording EEGs of each subject
• Throughout the night.
• B) To see whether the effectiveness of a new method of reading instruction is different for bilingual children vs. children who speak only English, 40 Bilingual and 40 English-Speaking children are
• Taught using the bilingual method for one semester and reading scores for the 2 groups are
• Compared.
• C) A clinical psychologist tests the relative effectiveness of two forms of therapy for treatment of panic attacks by recruiting 20 people diagnosed with panic attacks and treating half with one form
• Of therapy and half with the other form of therapy for the same amount of time.
• D) In a study of picture memory, 40 subjects are shown 1000 photographs under standard viewing conditions and recognition of the pictures is tested 1 week, 2 weeks, 4 weeks, and 8 weeks later.

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Definitions:

Blood Ph

The measure of the acidity or alkalinity of the blood, with a normal range typically between 7.35 and 7.45.

Normal Inspiration

The act of drawing air into the lungs under normal conditions, relying primarily on diaphragmatic movement.

Minute Ventilation

The total volume of air entering and leaving the lungs per minute.

Alveolar Ventilation

The exchange of gas between the lungs and the external environment, specifically the movement of air into and out of the alveoli.