Is the Major Explanation Offered to Account for the Differences

question 14

Multiple Choice

is the major explanation offered to account for the differences in the pattern of IQ stability or decline over adulthood shown in cross-sectional versus longitudinal studies?

• A) cohort differences
• B) terminal drop
• C) subject attrition
• D) unrepresentative samples

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Definitions:

Blastopore

Opening into the primitive gut formed at gastrulation.

Vertebrates

Animals with a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fish.

Gray Crescent

Region that forms during early cellular differentiation of the embryo; believed to contain unique chemical signals that are important during development.

Fertilization

The process by which male and female gametes combine to form a zygote, initiating embryonic development in sexually reproducing organisms.