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This article presents evidence of performance deterioration in online usersessions quantified by studying a massive dataset containing over 55 millioncomments posted on Reddit in April 2015. After segmenting the sessions (i.e.,periods of activity without a prolonged break) depending on their intensity(i.e., how many posts users produced during sessions), we observe a generaldecrease in the quality of comments produced by users over the course ofsessions. We propose mixed-effects models that capture the impact of sessionintensity on comments, including their length, quality, and the responses theygenerate from the community. Our findings suggest performance deterioration:Sessions of increasing intensity are associated with the production of shorter,progressively less complex comments, which receive declining quality scores (asrated by other users), and are less and less engaging (i.e., they attract fewerresponses). Our contribution evokes a connection between cognitive andattention dynamics and the usage of online social peer production platforms,specifically the effects of deterioration of user performance.

Evidence of Online Performance Deterioration in User Sessions on Reddit