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If the Correlation Coefficient of a Given Trait Among MZ

question 9

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If the correlation coefficient of a given trait among MZ twins is +.50, and the correlation coefficient among DZ twins on the same trait is +.30, then the heritability quotient is approximately


Definitions:

Vocabulary Explosion

The rapid increase in a child's vocabulary, often observed between the ages of two and six years.

Overregularization

A language development error where children apply grammar rules too widely, leading to incorrect verb forms or tenses.

Sensitive Period

A specific time window in development when the brain is particularly receptive to learning certain skills or knowledge.

Grammatical Rules

Guidelines in a language that dictate how words are combined to form correct sentences, encompassing syntax, morphology, and sentence structure.

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