What do studies show about stress and memory?

• A. Severe stress can impair memory
• B. No effect on memory
• C. Stress improves long-term memory only
• D. Moderate stress can enhance immediate and delayed recall of educational information

Answer: (D)

Moderate levels of stress push arousal to an optimal point that sharpens attention and enhances how new information is encoded and consolidated. When you’re mildly stressed, the brain releases chemicals like norepinephrine and cortisol that strengthen memory traces in the hippocampus and amygdala, helping you recall material both right after learning and after a delay. This fits the pattern often shown in research: memory performance rises with arousal up to a point, then declines if stress becomes too high. So for educational material, the most robust takeaway is that moderate stress can boost both immediate recall and later (delayed) recall. Severe or chronic stress, by contrast, tends to impair memory, especially retrieval, even though some memories formed under extreme stress can be unusually strong or fragmented.