Which of the following elements must be in place for a measure to be reliable?

For a measure to be reliable, it must be consistently interpreted and applied across different contexts and by different people.

Operational Definition: An operational definition specifies the exact procedures or criteria used to measure something, ensuring consistency and repeatability.

Consistency: With a clear operational definition, different people can use the measure in the same way, which is crucial for reliability.

Clarity: This definition eliminates ambiguity and ensures that everyone understands what is being measured and how.

Example: If measuring "response time," the operational definition might specify that it is the time between a user submitting a request and the system's initial response.