What cognitive ability do calculation tasks test during the MSE?

• A. Verbal fluency
• B. Visual perception
• C. Working memory and arithmetic
• D. Long-term memory

Answer: (C)

Calculation tasks in the mental status exam primarily assess working memory along with arithmetic processing. To do mental calculations, you have to hold digits and intermediate results in mind, apply the arithmetic rule, and update the outcome as you proceed. This real-time manipulation and sequencing reflect working memory capacity and how efficiently someone can perform arithmetic steps under mental load. Verbal fluency would involve generating words and is more about language production. Visual perception concerns recognizing and interpreting visual stimuli, not number manipulation. Long-term memory would involve recalling facts or events from the past, whereas calculation tasks depend on holding and manipulating information in the moment. So, the best fit is the combination of working memory and arithmetic ability.