Research paperDetecting depression stigma on social media: A linguistic analysis
Introduction
Depression is a common and serious mental disorder that affects people negatively. According to a report of the WHO, in 2015, the proportion of the global population with depression is estimated to be 4.4% (World Health Organization, 2017). Getting professional treatment can be helpful for most people with depression (Wang et al., 2003). However, the existence of stigma associated with depression hinders help-seeking behaviors and delays treatment of mental illness (Barney et al., 2006, Schomerus et al., 2009). Therefore, lowering depression stigma would improve mental health outcomes.
Stigma reduction campaigns work best when targeted. Information distributed through mass media is an important contributor to the dissemination of mental-health-related material that may increase stigma (Corrigan et al., 2005, Dietrich et al., 2006, Morgan and Jorm, 2009, McGinty et al., 2014, Niederkrotenthaler et al., 2014, Koike et al., 2015, Maiorano et al., 2017). If the characteristics of such stigma information can be understood, it may be possible to design interventions that counter its negative influence. However, the majority of previous studies investigating the impact of media coverage of mental illness mainly focused on traditional media platforms (e.g. newspapers and TV programs), with relatively little attention paid to new media platforms (i.e. social media). Recently, a few studies used of social media data to monitor mental-illness-related stigma information, including depression stigma information (Fu et al., 2013, Reavley and Pilkington, 2014, Li et al., 2015). These studies employed human coders to manually process potential stigma information, and established a series of schemes for coding stigma information on social media, which may provide us an evaluation method to determine whether a piece of social media post reflects mental-illness-related stigma or not. However, the sheer volume of social media data makes it difficult to identify stigma information by human coders. Therefore, there is a dire need for automatic detection of stigma, which may give us an efficient way to target stigma information automatically among massive information or at least minimize the information searching scope quickly. However, computational methods for detecting depression stigma have not yet been established.
The words that people use in their language expressions can provide clues into their psychological processes (Pennebaker et al., 2003). Evidence confirms that health-related stigma, including mental-health-related stigma, can be conveyed through different patterns of language use (Anthony et al., 2008, Downie and Black, 2010, Puhl et al., 2013, Slebioda, 2013). This suggests that incorporating linguistic analysis methods into online detection of stigma may improve our ability to screen for depression stigma information automatically on social media.
By analyzing Chinese language expressions in Sina Weibo posts, a famous microblogging service in China, this study aims to build computational models for detecting depression stigma information on social media.
Section snippets
Methods
In this study, a three-step procedure was followed: (1) data collection, (2) data pre-processing, and (3) data modeling.
The methods and procedures applied in this study were approved by the Institutional Review Board of the Institute of Psychology, Chinese Academy of Sciences. Participant consent was not obtained, as it is not required for analyzing publicly available data (Reavley and Pilkington, 2014, O’Dea et al., 2015, Li et al., 2015). Specifically, in this study, we only downloaded and
Coding
Table 1 showed the results of coding task. The Cohen's κ coefficients for stigma and its subcategories were 0.89 and 0.74, respectively, reflecting a substantial to almost perfect level of agreement (Landis and Koch, 1977). A total of 967 / 15,879 Weibo posts (6.09%) were coded as indicating depression stigma (male: 311 posts; female: 605 posts; not specified: 51 posts). 39.30% of them (380 posts) reflected the view that “People with depression are unpredictable” (unpredictability stigma),
Discussion
This study investigated the ways in which depression stigma presents on social media. Results of this study confirmed that incorporating linguistic analysis methods into online detection of stigma can be beneficial to improve the performance of stigma reduction programs.
First, social media data can be used to monitor users’ stigmatizing attitudes towards mental illness. In this study, two human coders were recruited to perform content analysis on Weibo posts with keywords. Results showed that
Funding information and role of the funding source
This work was supported by the National Basic Research Program of China (grant number 2014CB744600) and the Fundamental Research Funds for the Central Universities (grant numbers 2016ZCQ11, BLX2015-42). The funder has played no role in the research.
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