In scientific research, what does a limitation usually describe?

• A. A helpful result
• B. Something that is not right with an experiment or model
• C. A complete description of the method
• D. An observation

Answer: (B)

A limitation describes aspects of a study that may affect how confidently we can interpret the results. It points to issues in the experiment or the model that could introduce error or restrict how far the findings apply. For example, a study with a small or biased sample, uncontrolled variables, measurement errors, or simplifying assumptions in a model all count as limitations. These factors don’t negate the results, but they help explain why conclusions might be uncertain or not generalize to other situations—for instance, results from testing a drug in a narrow group may not apply to different ages or health conditions.

This helps scientists and readers judge the strength and scope of the conclusions. By recognizing limitations, we distinguish them from what the study actually found (a helpful result) or from raw observations, and separate them from details about the procedures (which describe how the study was done but aren’t the same as limitations).