Researcher George Vaillant Combined Samples from Three Studies: Male Harvard

question 321

Multiple Choice

Researcher George Vaillant combined samples from three studies: male Harvard graduates,boys from low-income urban families,and women with high IQs.Each of the studies began in the early decades of the 20th century and followed their samples with assessments every year or two from childhood or emerging adulthood into late adulthood.Vaillant conducted which of the following research designs?

• A)a longitudinal study
• B)a cross-sectional study
• C)a quasi-experiment
• D)a case study

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Definitions:

Risk-Free Rate

The theoretical rate of return of an investment with no risk of financial loss, often represented by the yield on government bonds.

Optimal Risky Portfolio

An investment portfolio that offers the highest expected return for a given level of risk or the lowest risk for a given level of expected return.

Beta

A measure of a security's volatility in relation to the overall market, indicating the security's risk compared to the market average.

Sensitive

Quick to detect or respond to slight changes, signals, or influences.