Multiple Choice
In developmental psychology, socioemotional processes involve changes in an individual's:
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1. Introduction to Psychology
Developmental Psychology
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In developmental psychology, approximately what percent of the adult brain's weight does a 2-year-old human's brain represent?
A
About 75%
B
About 50%
C
About 25%
D
About 90%
Verified step by step guidance1
Understand that the question relates to brain development in early childhood, specifically how much of the adult brain's weight is reached by age 2.
Recall that brain growth is rapid in the first years of life, with significant increases in size and weight occurring before age 2.
Recognize from developmental psychology research that by age 2, the brain has reached a substantial portion of its adult weight, but not yet fully matured.
Identify that the commonly accepted estimate is that a 2-year-old's brain weighs about 75% of the adult brain's weight.
Conclude that among the given options, 'About 75%' best represents the percentage of adult brain weight at age 2.
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