Which study was the first cross-sequential study of adult intelligence?

• A. Stanford-Binet Study
• B. Minnesota Twin Study
• C. Seattle Longitudinal Study
• D. Strange Situation Study

Answer: (C)

Verified step by step guidance

1. Understand the concept of a cross-sequential study: it combines both cross-sectional and longitudinal research methods to study changes over time across different age groups.
2. Recall the major studies related to adult intelligence and their methodologies, focusing on which used a cross-sequential design.
3. Identify that the Stanford-Binet Study primarily involved intelligence testing but was not cross-sequential in design.
4. Recognize that the Minnesota Twin Study focused on genetic influences using twins, not a cross-sequential approach.
5. Conclude that the Seattle Longitudinal Study was the first to use a cross-sequential design to study adult intelligence, tracking multiple age cohorts over time.