Two-To-Three-Month-Olds Become Quieter and Exhibit a Decreased Heart Rate Over

question 130

Multiple Choice

Two-to-three-month-olds become quieter and exhibit a decreased heart rate over the deep end of the visual cliff,suggesting that

• A) they have not yet developed a fear of depth.
• B) they have developed a fear of depth.
• C) they are less interested in the deep side.
• D) they lack the visuomotor skills to respond appropriately.

---

Definitions:

Increased Mortality

A rise in the number of deaths, often within a specific population or due to a particular cause.

Overweight

A condition characterized by having more body fat than is optimally healthy, often measured by body mass index (BMI).

Set-Point

The theory that each individual has a genetically determined range of weight and temperature that their body will try to maintain to stay at optimal health.

Metabolism

The complex set of chemical reactions within a living organism that are necessary for the maintenance of life, involving energy production and utilization.