James, at Age 4, Can Follow Verbal Directions and Understand

question 21

Multiple Choice

James, at age 4, can follow verbal directions and understand what others say to him, but he does not talk. James does not have an organic or physiological abnormality. His problem can be described as

• A)expressive aphasia.
• B)preverbal language disorder.
• C)receptive aphasia.
• D)acquired aphasia.
• E)central language disorder.

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Definitions:

Gabbro

A coarse-grained igneous rock that forms from the slow cooling of magma beneath the Earth's surface, composed mainly of plagioclase feldspar and pyroxene.

Welded Rhyolite

Is a type of volcanic rock that has been superheated and compacted under extreme conditions, resulting in a dense, hard rock.

Calderas

Large, usually circular depressions in the ground caused by volcanic activity, specifically the collapse of a magma chamber after a volcanic eruption.

Caldera-forming Eruption

A volcanic eruption significant enough to collapse the summit area and form a large, basin-like depression called a caldera.