Alfredo is developing a test to measure an individual's anxiety in new situations. If the items on the measure represent the symptoms that define the anxiety construct, the measure is said to have content validity.
In the field of research, construct validity can be described as the extent to which the aspects of a test validate a behavior or stimuli.
In the case above, the aspect that needs to be measured are the situations that lead to an individual's anxiety. Such aspects or measures that will develop or increase anxiety levels in a person will prove to be the content validity for anxiety.
Content validity determines how well an experiment is able to measure the aspects of a test.
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