correlational
Taking 3 grams of glycine before bed might help people remember things better, based on memory tests.
Scientific Claim
Ingestion of 3 grams of glycine before bedtime is associated with improved performance on memory recognition tasks in individuals with chronic sleep dissatisfaction.
Original Statement
“Glycine lessened daytime sleepiness and improved performance of memory recognition tasks.”
Evidence Quality Assessment
Claim Status
overstated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The study design (cohort study) cannot establish causation, but the abstract uses 'improved' which implies causation. The correct verb strength should be 'associated with improved' or 'linked to better'.
Evidence from Studies
No evidence studies found yet.