The students who show signs of depression are more inclined towards using the Internet differently than those who show no symptoms of being depressed, a new study has revealed. Researchers at Missouri University of Science and Technology analyzed Internet usage among college students.
They used the actual Internet usage data collected from the university's network for the purpose of study.
The researchers recognized nine fine-grained patterns of Internet usage that may indicate depression.
They found that the students showing signs of depression tend to use file-sharing services more than their counterparts, and also use the Internet in a more random manner, frequently switching among several applications.
Dr. Sriram Chellappan, an assistant professor of computer science at Missouri S and T and the lead researcher in the study claimed that the findings provide new insights on the association between Internet use and depression compared to existing studies. "The study is believed to be the first that uses actual Internet data, collected unobtrusively and anonymously, to associate Internet usage with signs of depression", said Chellappan. He revealed that Previous research on Internet usage has relied on surveys, which are "a far less accurate way" of assessing how people use the Internet.
"This is because when students themselves reported their volume and type of Internet activity, the amount of Internet usage data is limited because people's memories fade with time. "There may be errors and social desirability bias when students report their own Internet usage," Chellappan said. Here, social desirability bias refers to the tendency of survey respondents to answer questions in a manner that will be viewed favorably by others. Chellappan and his fellow researchers gathered a month's worth of Internet data for 216 Missouri S and T undergraduate students.
The data was collected anonymously and unobtrusively and students involved in the study were assigned pseudonyms to keep their identities concealed from the researchers. However, before the researchers collected the usage data from the campus network, the students were tested to determine whether they showed signs of depression.
After this the researchers analyzed the usage data of the study participants. They found that students who showed signs of depression used the Internet much differently than the other study participants. Chellappan and his colleagues found that depressed students tended to use file-sharing services, send email and chat online more than their counterparts.
Such students also tended to use higher "packets per flow" applications, those high-bandwidth applications often associated with online videos and games, than their counterparts. Also they tended to use the Internet in a more "random" manner by frequently switching among applications, perhaps from chat rooms to games to email. Chellappan thinks that randomness may indicate trouble concentrating, a characteristic related to depression.
"Students showing signs of depression had high flow duration entropy, which means that the duration of Internet flows of these students is highly inconsistent," said Chellappan. At the beginning of the study, the 216 participating students were tested to determine whether they showed the symptoms of depression.
Based on the Center for Epidemiologic Studies-Depression (CES-D) scale, about 30 percent of the students in the study fulfilled the minimum criteria for depression. On a national level, previous studies have shown that between 10 percent and 40 percent of all American students suffer from depression. Chellappan's study has been accepted for publication in a forthcoming issue of 'IEEE Technology and Society Magazine'.
The study will be titled as "Associating Depressive Symptoms in College Students with Internet Usage Using Real Internet Data. Kotikalapudi is the chief author of the paper and has received his Master of Science degree in computer science from Missouri S and T in December 2011. His co-authors for the paper are Chellappan; Dr. Frances Montgomery, Curators' Teaching Professor of psychological science; Dr. Donald C. Wunsch, the M.K. Finley Missouri Distinguished Professor of Computer Engineering; and Karl F. Lutzen, information security officer for Missouri S and T's IT department.
Chellappan is now aiming to use these findings to develop software that could be installed on home computers to help individuals determine whether their Internet usage patterns may indicate depression.
The software would unobtrusively monitor Internet usage and alert individuals if their usage patterns indicates signs of depression.
"The software would be a cost-effective and an in-home tool that could proactively prompt users to seek medical help if their Internet usage patterns indicate possible depression.""The software could also be installed on campus networks to notify counselors of students whose Internet usage patterns are indicative of depressive behavior," said Chellappan. Chellappan also believes that, the method used to connect Internet use and depression can be helpful help in the diagnosis of other mental disorders like anorexia, bulimia, attention deficit hyperactivity disorder or schizophrenia.
"We could also investigate associations between other Internet features like visits to social networking sites, late night Internet use and randomness in time of Internet use with depressive symptoms," he said.
"Applications of this study to diagnose and treat mental disorders for other vulnerable groups like the elderly and military veterans are also significant," he added. (ANI)