Roger, Who Is 10 Months Old, Is Sitting on the Floor

question 143

Multiple Choice

Roger, who is 10 months old, is sitting on the floor of his room happily playing with his toys. The phone rings, and his mother leaves the room to get it. Roger begins to cry. Roger is experiencing

• A) separation anxiety.
• B) loneliness.
• C) fear of strangers.
• D) jealousy.

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Definitions:

Receptive Field

The specific area within the visual world that elicits a response from any sensory neuron.

Lamellated Corpuscles

Pressure receptors in the skin and other organs that respond to deep pressure and vibration.

Ruffini Corpuscles

Sensory receptors in the skin that respond to stretch and sustained pressure.

Two-Point Discrimination

The ability of the skin to distinguish two nearby points as separate stimuli, a measure of sensory nerve function.