Most Researchers Who Study the Role of Race and IQ

question 149

Multiple Choice

Most researchers who study the role of race and IQ testing have concluded that

• A) there are strong genetically based differences between ethnic and racial groups in the area of IQ test performance.
• B) although differences between ethnic and racial groups on standardized IQ tests may be demonstrated, the more likely factor in this difference is environmental.
• C) the issue should not be studied because of its disruptive nature to society.
• D) IQ tests are so strongly biased against certain racial groups because of the political pressure that exists to create such biased tests.
• E) none of these

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Definitions:

Node of Ranvier

Gaps in the myelin sheath of nerve fibers where the axonal membrane is exposed to the extracellular space, facilitating rapid signal transmission.

Action Potential

A rapid rise and subsequent fall in membrane potential across a cellular membrane, crucial for the propagation of electrical signals in nerve and muscle cells.

Local Potentials

Electrical changes in neurons that are confined to a small region, serving as the initial response to stimuli, potentially leading to action potentials.

Membrane Potential

The voltage difference across a cell's plasma membrane due to the differential distribution of ions.