Which of the Following Is a Characteristic Reaction of an Infant

question 94

Multiple Choice

Which of the following is a characteristic reaction of an infant who scores high in the extraversion/surgency dimension in Mary Rothbart's model of temperament?

• A) As William's mother hands him a new toy, it begins to play music. He throws the toy down and begins crying.
• B) When Eva meets a puppy for the first time, it barks and Eva startles. Then she smiles and reaches for the puppy.
• C) As Kihye learns to walk, she only takes steps when holding her parents' hands. If they let go, she sits down and begins to cry.
• D) When Kamal's father attempts to engage in high stimulating play with him, he averts his gaze and sucks his thumb before resuming eye contact and smiling.

---

Definitions:

Epigenetic Marks

Chemical modifications to the DNA or histone proteins that affect gene activity without altering the DNA sequence, influencing gene expression.

Refractory Period

The period immediately following a stimulus or action during which a nerve or muscle is unresponsive to further stimulation.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell, the fundamental unit of the nervous system encoding and transferring information.

Myelin Sheath

A protective covering that surrounds axons of many neurons, facilitating the faster transmission of electrical impulses along the nerve cells.