Final answer:
Understanding the concept of effect size aids researchers in evaluating the importance of results, interpreting statistical significance more clearly, and comparing findings across different studies.
Step-by-step explanation:
Our general knowledge of what is a small or large effect size can help the researcher in multiple ways. A quantifiable indicator of the experimenter effect's strength is called effect size. In practical terms, knowing whether an effect size is small, medium, or large can:
Evaluate the overall importance of a result. Researchers can determine if their findings have practical significance in addition to statistical significance. Make better sense of statistical results by providing a standardized measure to interpret the impact of findings. Compare results with effect sizes found in other studies to see if their results are consistent with or differ from those studies.
Therefore, the correct answer is (d) all of the above.