A Major Advantage of Randomly Selecting Participants from a Population

question 49

Multiple Choice

A major advantage of randomly selecting participants from a population is that

• A) it allows you to do your study with fewer participants and still find statistical significance in your results.
• B) you can be more confident that it was the manipulation of the independent variable that caused the changes observed in the dependent variable.
• C) you can be more confident that your sample is representative of the population.
• D) it is more likely that your sample will have the characteristics you need it to have.

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Definitions:

Neuron

A specialized cell transmitting nerve impulses; a nerve cell, fundamental unit of the nervous system.

EPSP

Stands for Excitatory Postsynaptic Potential, a temporary increase in postsynaptic membrane potential caused by the flow of positively charged ions into the postsynaptic cell, making it more likely that the cell will fire an action potential.

Depolarization

A decrease in membrane potential that makes the interior of a cell less negative compared to the outside, crucial for nerve impulse transmission.

Voltage-Gated Channel

A type of protein channel in cell membranes that opens or closes in response to changes in electrical membrane potential.