Weak Instruments Are a Problem Because

question 4

Multiple Choice

Weak instruments are a problem because

• A)the TSLS estimator may not be normally distributed, even in large samples.
• B)they result in the instruments not being exogenous.
• C)the TSLS estimator cannot be computed.
• D)you cannot predict the endogenous variables any longer in the first stage.

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Definitions:

Gate-Control Theory

The theory that the experience of pain depends in part on whether pain impulses get past a neurological “gate” in the spinal cord and thus reach the brain.

Critical Periods

Specific times during an organism's life span when it is more sensitive to environmental influences or stimulation than at other times.

Sensory Adaptation

A process by which the sensitivity to a stimulus decreases over time when the stimulus is constantly present.

Gate-Control Theory

A theory that suggests the spinal cord contains a neurological "gate" that either blocks pain signals or allows them to continue on to the brain.