A Researcher Wishes to Conduct a Study of a Small

question 4

Multiple Choice

A researcher wishes to conduct a study of a small number of subjects on a large hospital intensive care unit.To minimize problems associated with extraneous variables in the study setting,the researcher will

• A) ensure double-blind data collection methods.
• B) randomly assign subjects to treatment and control groups.
• C) test the reliability of study measures.
• D) train a small number of nurses to administer the intervention.

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Definitions:

Axon Diameter

Refers to the width of an axon, which influences the speed of nerve impulse conduction, with larger diameters allowing faster conduction.

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another in the nervous system.

Retrograde Signals

Molecular signals that travel from the postsynaptic neuron back to the presynaptic neuron, modulating neurotransmission.

Patch Clamp Technique

A method that allows researchers to study the ion channels of a tiny patch of membrane by tightly sealing a micropipette to the patch and measuring the flow of ions through the channels.