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What are Measurement Events?

In surveys a measurement event is an action taken to determine attitudes, beliefs, knowledge, skills, memory, dispositions, and feelings.  In experiments a measurement event is an action taken to determine whether something happened or changed in an experiment in response to a treatment (intervention or stimulus).  

Measurements generally involve things you want to learn about in your study and are usually referred to as "dependent variables" or  "response variables" because they depend on or are responses to other factors that you want to explore, evaluate, or use to produce a change.  Examples of dependent variables are "jury verdicts," "reading performance," and "reaction time."  Variables must be "operationalized," meaning that one must specify exactly how they are measured.  For example, a question might be asked or a blood pressure might be taken. These actions are measurement events.