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Assume that stock market returns do not resemble a single-index structure. An investment fund analyzes 125 stocks in order to construct a mean-variance efficient portfolio constrained by 125 investments. They will need to calculate _____________ expected returns and ___________ variances of returns.
Habituation
The process by which a person or animal becomes accustomed to a stimulus after repeated exposure, leading to a decrease in response.
Higher-order Conditioning
A classical conditioning process where a conditioned stimulus is paired with a neutral stimulus to elicit a conditioned response without the need for the original unconditioned stimulus.
Sensitization
The increased responsiveness of a sensory system to a stimulus, usually following repeated exposure to that stimulus.
Behavioral Contrast
A phenomenon where a change in conditions results in an opposite change in behavior, often observed in operant conditioning experiments.
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