Regardless of the Research Methodology Being Used, Researchers Studying Changes

Multiple Choice

Regardless of the research methodology being used, researchers studying changes in intelligence over the lifespan usually find that

A) both fluid and crystallized intelligence show similar declines in middle adulthood
B) both fluid and crystallized intelligence show similar declines in late adulthood
C) crystallized intelligence appears to decline somewhat earlier than fluid intelligence does
D) fluid intelligence appears to decline somewhat earlier than crystallized intelligence does