An Infant Is Shown an Interesting Rattle and Appears to Like

question 81

Multiple Choice

An infant is shown an interesting rattle and appears to like it. Then the mother places the rattle under a blanket. The infant appears to forget about the rattle completely. Which of the following is most likely true?

• A) The infant probably is older than 8 months.
• B) The infant probably is younger than 8 months.
• C) The infant had habituated to the rattle.
• D) The infant had not habituated to the rattle.

---

Definitions:

Hypoxia

Inadequate cellular oxygenation that may result from a deficiency in the delivery or use of oxygen at the cellular level.

Cardiac Output

The volume of blood the heart pumps through the circulatory system in one minute, an essential parameter in assessing cardiac health.

Diastolic Filling

The phase in the cardiac cycle where the heart chambers fill with blood following relaxation.

Hemoglobin Level

A measurement of the concentration of hemoglobin in a person's blood, indicating the blood's capacity to carry oxygen.