The benefits of journaling have been scientifically noted since 1986. In a study by Pennebaker & Beall (1986), it was discovered that students randomly assigned to write about traumas for 15 minutes a day over four days ended up visiting the student health center about 50% less over the next six months compared to students in the control condition. In 2008, Burton and King examined the effects of expressive writing for just 2 minutes per day over two days. They found that even these brief writing sessions led to improved mood and psychological well-being. More recently, a study by Adams, Ohren, and Hudson on digital journaling involved 177 participants over a month. They found that 68% of respondents in the study cited "clarity and insight on difficult issues" as a significant benefit of digital journaling.