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Processing Speed

Research analysis led by Kamal Patel.
All content reviewed by the Examine.com Team. Published: Jun 28, 2017
Last Updated:

Summary of Processing Speed

Primary Information, Benefits, Effects, and Important Facts

Scientific Information on Processing Speed

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect processing speed
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
grade-c Minor - See study
Study was unable to properly assess coconut oil as it was used as an active control; some benefit appears apparent relative to fish oil.
grade-c Minor Moderate See 2 studies
In older individuals, there appears to be an increase in processing speed without a sacrifice in accuracy
grade-c Minor - See study
A decrease in processing speed appears to occur following lemon balm ingestion, which may be related to the sedation effects
grade-c Minor - See study
Trail making test time in older adult men appears to be reduced modestly with daily supplementation of nigella seed extract
grade-c Minor - See study
Increased processing speed has been noted in otherwise healthy persons at 400mg PS daily when testing was conducted in a fatigued state (post exercise) which coincided with increase accuracy as well.
grade-c - - See study
There does not appear to be a significant influence on processing speed, with some evidence suggesting a possible reduction thereof.
grade-d Minor Very High See 2 studies
Studies in healthy people and people with bipolar disorder have found increases, but not in accuracy.
grade-d - - See study
Processing speed is not significantly influenced with the aroma of peppermint during cognitive testing