Which Wechsler Memory Scale score range corresponds to Average intelligence?

Which Wechsler Memory Scale score range corresponds to Average intelligence?

• A. 70-79
• B. 80-89
• C. 110-120
• D. 90-109

Answer: (D)

On the Wechsler Memory Scale, scores are standardized so that the average (mean) is 100 with a spread of about 15 points. This means most people fall near 100, within roughly one standard deviation. A memory index score in the 90s up to about 109 is considered average memory functioning because it surrounds the mean and represents typical performance across individuals. Scores that fall into the 70s or 80s indicate well below average memory, while scores in the high 110s and above indicate above-average memory. So the 90–109 range best matches the standard interpretation of average on the Wechsler Memory Scale.

On the Wechsler Memory Scale, scores are standardized so that the average (mean) is 100 with a spread of about 15 points. This means most people fall near 100, within roughly one standard deviation. A memory index score in the 90s up to about 109 is considered average memory functioning because it surrounds the mean and represents typical performance across individuals. Scores that fall into the 70s or 80s indicate well below average memory, while scores in the high 110s and above indicate above-average memory. So the 90–109 range best matches the standard interpretation of average on the Wechsler Memory Scale.