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A central concept behind the field of health psychology is that
Abnormal Returns
Returns on a stock or portfolio that differ significantly from the expected return based on the market or certain benchmarks.
Mean-Variance Theory
A financial model that analyzes investments by examining their expected returns (mean) against their risk (variance) to select the most efficient portfolio.
Risk-Aversion Coefficients
Numerical measures quantifying an investor's tolerance for risk, impacting their investment choices and portfolio management.
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