Background: Depressed individuals use language differently than healthy controls and it has been proposed that social media posts could therefore be used to identify depression. But much of the evidence behind this claim relies on indirect measures of mental health that are sometimes circular, such as statements of self-diagnosis (“Got an OCD diagnosis today”) on social media or membership in disorder-specific online forums. Relatedly, few studies have tested if these language features are specific to depression versus other aspects of mental health. Methods: We analyzed the Tweets of 1,006 participants who completed questionnaires assessing symptoms of depression and 8 other mental health conditions. Daily Tweets were subjected to textual analysis and the resulting linguistic features were used to train an Elastic Net model on depression severity, using nested cross validation. We then tested performance in a held-out test set (30%), comparing predictions of depression versus 8 other aspects of mental health. Results: The depression trained model had only modest predictive performance when tested out of sample, explaining just 2.5% of variance in depression symptoms (R2 = 0.025). The performance of this model was as-good or superior when used to identify other aspects of mental health: schizotypy (R2 = 0.035), social anxiety (R2 = 0.025), eating disorders (R2 = 0.025), generalized anxiety (R2 = 0.041), above chance for obsessive-compulsive disorder (R2 = 0.011), apathy (R2 = 0.008), but not significant for alcohol abuse (R2 = -0.012).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.