A series of experiments conducted at the Department of Psychology at St. Lawrence University in Canton, New York examined the effects of chewing gum on cognitive function. The results showed that chewing gum provided performance advantages when gum was chewed for 5 minutes before, but not during, cognitive testing. The benefits, however, remained only for the first 15 to 20 minutes of the testing session. These restrictions are likely related to the arousal caused by chewing. However, due to the combined use of resources by the cognitive and chewing processes, the effect was reduced, and chewing gum only interfered with mental activity.

Another study found that chewing gum can help reduce stress levels. During the experiment, it was found that particular stress-specific emotions, like not feeling relaxed and feeling tense, significantly increased when participants refrained from chewing and decreased during chewing. However, more severe stress levels, like frustration or fright, were unaffected by chewing gum.

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