To study the cognitive component of emotions, psychologists are most likely to use techniques.

To study the cognitive component of emotions, psychologists are most likely to use "self-report" techniques.

Explanation:

Self-report techniques are one of the most reliable sources of data and it's analysis psychologists have. Because the can control the answer pool and provide punctuation to each item. Also, because they can define the association between response and cause in the level of impact.

This type of research instrument can be applied to a great amount of population and the data can be gathered quickly to analyze it. They also provide the opportunity to keep the research objective, without a bias.

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