Which measurement term describes a method where some instances may not be detected?

• A. Discontinuous Measurement
• B. Continuous Measurement
• C. Time Sampling
• D. Event Counting

Answer: (A)

Discontinuous measurement captures behavior only at specific moments or within set intervals, so some occurrences can go undetected. This approach reduces observation time or effort, but it means not every instance is recorded. Types like partial interval recording, whole interval recording, and momentary time sampling illustrate this idea. By comparison, continuous measurement records each occurrence as it happens, so detection is complete during the observation period. Time sampling is a form of discontinuous measurement, which is why it can miss events. Event counting focuses on tallying occurrences within a period, but the term that best describes the possibility of missed instances due to sampling is discontinuous measurement.