A Researcher's Expectations About a Study Can Affect Its Outcome

question 55

Multiple Choice

A researcher's expectations about a study can affect its outcome. The type of research design used specifically to address this problem is a(n) :

• A) experiment.
• B) random-assignment design.
• C) matched control group design.
• D) masked design.

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Definitions:

Local Potential

A transient change in the electrical charge of a neuron's membrane, which can lead to an action potential if it reaches a certain threshold.

Threshold Level

The level of stimulation that must be exceeded for a reaction or response to occur, marking the limit between inaction and action.

Action Potential

A temporary reversal of electrical charge across a cell membrane, leading to the transmission of nerve impulses.

Myelinated

Refers to axons that are covered with a fatty sheath called myelin, which increases the speed at which electrical impulses propagate along the nerve cell.