Jacob Cohen

Jacob Cohen was an influential psychologist and statistician known for his work on research methodology and statistical power. He developed Cohen's d, a measure of effect size that helps researchers understand the practical significance of their findings beyond just statistical significance. Cohen emphasized the importance of designing studies that are adequately powered to detect meaningful effects, promoting rigor and transparency in scientific research. His contributions have guided researchers in interpreting results more accurately and avoiding false conclusions, making his work foundational in the fields of psychology, social sciences, and beyond.