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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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Jessica_doll Jessica_doll
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7 years ago
At 6 months of age, Alexandra could reach out and grab a toy with her hand, but was unable to pick up a small toy with her finger and thumb until she was 9 months old. This illustrates what developmental principle?
A) independence of systems
B) hierarchical integration
C) cephalocaudal
D) proximodistal
Textbook 
Development Across the Life Span

Development Across the Life Span


Edition: 4th
Author:
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lucianoluciano
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7 years ago
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Jessica_doll Author
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#2
7 years ago
Heavy Heart Thanks
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#3
4 years ago
thank u
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#4
4 years ago
cool.
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