aim and background: the purpose of this study was to compare executive function and sustained attention in students with obsessive–compulsive, high schizotypal and overlapping symptoms and a control group. methods and materials: the present study assessed undergraduate students of tabriz university by ex post facto method. randomized multi-stage cluster sampling was used to select 1570 students...

Chewing is crushing food not only to aid swallowing and digestion, but also to help stress relief and regulate cognitive function, especially in attention. It is well known that chewing gum is used for sleepiness prevention during work, learning, and driving, suggesting a link between chewing and sustained attention. We hypothesized that chewing elevates attention and/or alertness, leading to i...