{"id":81385,"date":"2026-11-09T22:22:31","date_gmt":"2026-11-10T03:22:31","guid":{"rendered":"https:\/\/digital.hec.ca\/?p=81385"},"modified":"2026-11-09T22:22:33","modified_gmt":"2026-11-10T03:22:33","slug":"tiktok-doomscrolling-the-psychology-behind-endless-scrolling","status":"publish","type":"post","link":"https:\/\/digital.hec.ca\/en\/blog\/tiktok-doomscrolling-the-psychology-behind-endless-scrolling\/","title":{"rendered":"TikTok Doomscrolling: The Psychology Behind Endless Scrolling"},"content":{"rendered":"\n
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An image of many people doomscrolling on their phones.<\/figcaption><\/figure>\n\n\n\n

Just One More Video<\/strong>…<\/h2>\n\n\n\n

Recount the familiar experience of opening TikTok for a quick five-minute break from studying, only to look up and realise it has been one hour and you have bought five things you did not know you needed but suddenly cannot live without.<\/p>\n\n\n\n

The time warp that is TikTok’s doom scroll has the whole world within its grasp. Since TikTok’s merger with Musical.ly took over the world in 2018, short-form content has skyrocketed in popularity. Its endless scrolling feature and two-times speed have almost achieved time travel. What starts as a quick distraction can turn into an endless scrolling session, with one video seamlessly leading into the next.<\/p>\n\n\n\n

But how does an app capture our attention so aggressively, and what happens when something that started as entertainment becomes a crutch society cannot live without?<\/p>\n\n\n\n

This article explores how TikTok manages to hold user attention, the psychological mechanisms behind this behaviour, its effects and how it creates new marketing opportunities for brands. <\/p>\n\n\n\n

Understanding TikTok’s Endless Scrolling Phenomenon<\/h2>\n\n\n\n

TikTok’s Endless Scrolling Design<\/h3>\n\n\n\n

TikTok is a short-form video-sharing app created by ByteDance. When users open the app, they are immediately taken to the For You Page (FYP), where they find a continuous vertical stream of videos on an automatic loop that are personalised, well, ‘For You’. There is no natural endpoint or need to actively select the next video; therefore, little effort is required to keep scrolling – the real effort lies in ending the scroll session. This frictionless design helps remove barriers between the user and the content. The easier it is to consume content, the easier it is to continue doing so.<\/p>\n\n\n\n

TikTok operates in the attention economy. This means user attention is a valuable commodity. Short-form video provides easily digestible snippets of entertainment. This lets users consume large amounts of content in relatively little time. Unlike traditional media, where users can select what they want to consume, TikTok continually serves up content based on predicted interest. This creates an effortless experience which lets consumers sit back, relax and be spoon-fed whatever their hearts desire.<\/p>\n\n\n\n

How the TikTok Algorithm Drives Doomscrolling<\/h3>\n\n\n\n

The FYP is a personalised recommendation algorithm that analyses the user’s likes, behaviours and activity on the app to show videos precisely selected for the user to enjoy. Whilst this is a fairly complicated design that the average Joe would not understand, there are five main technical mechanisms which support the framework. <\/p>\n\n\n\n

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  1. Collaborative filtering and matrix factorisation<\/strong>: This analyses patterns among user interactions to find common interests and predict what they might enjoy <\/li>\n\n\n\n
  2. Feature extraction plus embeddings<\/strong>: This converts user behaviour and video characteristics into mathematical vectors to find similarities between the user and videos <\/li>\n\n\n\n
  3. Candidate generation<\/strong>: This narrows down TikTok’s enormous discography into a smaller selection of potentially relevant videos<\/li>\n\n\n\n
  4. Predictive ranking models<\/strong>: These score and rank ideas according to user activity such as watch time, scrolls, swipes, completion, likes, etc.<\/li>\n\n\n\n
  5. Continuous feedback and optimisation<\/strong>: This uses all interaction features to fine-tune future recommendations and continuously adapts to changing user interactions<\/li>\n<\/ol>\n\n\n\n

    The TikTok Doomscrolling Feedback Loop<\/h3>\n\n\n\n

    The result? The ‘doom scroll’. The algorithm registers and learns what a user likes and learns from the activity to find out what will keep you watching. Due to the fact that users can watch dozens of short videos in a short time, TikTok can collect a substantial amount of behavioural feedback versus applications with long-form content. The more you scroll, the easier it gets to keep you hooked. It’s a vicious cycle.<\/p>\n\n\n\n

    The Psychology: Why Can’t We Stop?<\/h2>\n\n\n\n

    The technology explains how TikTok delivers increasingly personalised content, but the psychology explains why we keep coming back for more. One of the most interesting and scary aspects of TikTok is how it combines rewards, expectation and social reinforcement to encourage persistent engagement.<\/p>\n\n\n\n

    TikTok Doomscrolling and Variable Rewards<\/h3>\n\n\n\n

    Dopamine plays an important role in motivation and reward anticipation. TikTok exploits the volatility of content consumption. You never know whether your next scroll will be something hilarious, informational or completely irrelevant. This is known as variable reinforcement. Similar to a slot machine, the reward is unpredictable. This encourages users to keep trying for the next rewarding experience. Not every video is entertaining, but the possibility that the next one will keep you spending that currency called time.<\/p>\n\n\n\n

    Social Validation, FOMO and TikTok Doomscrolling<\/h3>\n\n\n\n

    Likes, comments, views, and shares provide users with visible measures of social approval. These interactions might reinforce engagement, which creates a further desire for recognition and validation. For creators in particular, engagement metrics can become closely tied to self-esteem and perceptions of popularity or social status.<\/p>\n\n\n\n

    TikTok exposes users to a constant stream of carefully selected lifestyles, appearances, relationships and achievements. This creates opportunities for comparison, which are often based on unrealistic representations of everyday life. Repeated exposure may contribute to feelings of inadequacy and insecurity, leading to anxiety and depression, particularly among younger users.<\/p>\n\n\n\n

    Trends, viral videos and constantly evolving conversations and opinions create pressure to stay connected. Users may feel that if they stop scrolling, they will miss something important or become disconnected from their social circles. TikTok can create communities and connect people using shared interests; however excessive use can also displace meaningful in-person interactions.<\/p>\n\n\n\n

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    An image of a healthy brain.<\/figcaption><\/figure>\n\n\n\n

    The Effects of TikTok Doomscrolling<\/h2>\n\n\n\n

    Cognitive Function and Sleep<\/h3>\n\n\n\n

    Growing research into short-form video consumption raises questions about its possible impact on cognitive functioning. Researchers have used the term ‘TikTok brain’ to describe perceived changes in attention and concentration associated with heavy consumption of the app. <\/p>\n\n\n\n

    The constant exposure to rapidly changing videos, sounds, and information creates an environment of continuous stimulation. Rapidly switching between different topics and stimuli may make sustained concentration more difficult. Some research links problematic short-form video use to a poorer ability to resist distractions and impulses. Emerging research has also explored associations between heavy short-form video use and difficulties with working memory. Activities such as reading, studying or listening to a lecture may feel comparatively slow and unrewarding after extended periods of highly stimulating content.<\/p>\n\n\n\n

    The endless feed doesn’t necessarily stop when the day ends. Late-night scrolling can delay bedtime, while notifications and continued screen exposure can interfere with healthy sleep routines. Poor sleep can affect memory, concentration, mood and emotional regulation.<\/p>\n\n\n\n

    TikTok Doomscrolling and Younger Users<\/h3>\n\n\n\n

    These concerns become particularly important when considering younger users. Adolescence is a significant period of brain development, specifically in areas involved in impulse control, decision-making, and regulation of emotions. Constant exposure to beauty standards and idealised lifestyles may influence how young people perceive themselves and others.<\/p>\n\n\n\n

    Research from the American Psychological Association<\/a>, among others, has associated this video consumption with increased anxiety, depression, stress and loneliness. The concern is not simply that young people are spending too much time online, but that excessive exposure may reinforce habits and behaviours during an important stage of psychological and cognitive development.<\/p>\n\n\n\n

    TikTok Doomscrolling: Marketing Opportunities for Brands<\/h2>\n\n\n\n

    Here is where the psychology and technology become particularly interesting from a marketing perspective. The same mechanisms that encourage users to keep scrolling also create an incredibly valuable environment for brands. TikTok has transformed advertising from something users actively seek out or encounter between episodes of their favourite show into something that can be integrated into their scroll routine without them even realising.<\/p>\n\n\n\n

    The algorithm lets brands reach users based on their interests and patterns rather than depending solely on broad demographic targets. This allows brands to target a highly specific audience; therefore, product discovery can become fast and accessible. A user can open TikTok for entertainment and unexpectedly encounter a product review or influencer advertisement with precise links to the product. This massively shortens the journey from discovering the product to buying. This is particularly relevant to TikTok Shop, where entertainment and e-commerce overlap. <\/p>\n\n\n\n

    Brands on TikTok can use trending sounds, challenges and viral formats to insert themselves into existing conversations, which can increase visibility and encourage purchase. Ultimately, TikTok provides brands with something extremely valuable – access to consumer attention at the exact right time.<\/p>\n\n\n\n

    Is It Ethical?<\/h3>\n\n\n\n

    However, this raises an important question. Where does entertainment end and manipulation begin? If platforms are meant to maximise attention and brands can use that attention to affect purchasing decisions, how much responsibility do they have for the behaviours they encourage?<\/p>\n\n\n\n

    The combination of personalised advertising and impulse purchasing can subject users to constant commercial pressure. Younger audiences may be particularly vulnerable as they lose a sense of normality and lead themselves into a spiral of overconsumption. The challenge for brands is to benefit from TikTok’s marketing potential without exploiting the psychological mechanism that makes the platform so engaging.<\/p>\n\n\n\n

    Conclusion: Just One More Video?<\/h2>\n\n\n\n

    Well, it’s never just one more video. A five-minute break can turn into an hour of scrolling, but at least now you have a better understanding of why this happens. <\/p>\n\n\n\n

    TikTok’s success is not simply about entertaining videos. It is the combination of sophisticated algorithms and a frictionless platform design that makes the app so difficult to delete. For users, this raises significant questions about well-being and how much control we have over our digital habits. For brands, it represents the opportunity to influence consumers. Perhaps the most interesting question is not why we watch one more video, but whether we are really choosing to.<\/p>\n\n\n\n

    Frequently Asked Questions<\/h2>\n\n\n\n
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    1. Why is TikTok so addictive?<\/strong> It combines personalised recommendations, endless scrolling and frictionless app layout to keep users engaged. It also acts like a slot machine where there is unpredictability and the constant possibility of finding another interesting video, making it hard ot stop<\/li>\n\n\n\n
    2. How does the algorithm keep users scrolling?<\/strong> A combination of analysis on users’ activity such as likes, comments, saves and general behaviours. The more someone interacts with the app, the more accurate the algorithm is. <\/li>\n\n\n\n
    3. Can TikTok affect your brain? <\/strong>Research suggests it can shorten attention span and harm self-control; however more research is needed to establish long-term effects and whether TikTok directly causes this.<\/li>\n\n\n\n
    4. How can brands advertise on TikTok?<\/strong> Brands can partake in viral trends and use popular sounds to gain traffic and traction. They also use the algorithm on TikTok to ensure their video is shown to a consumer who are most likely to buy what they are selling.<\/li>\n<\/ol>\n\n\n\n

      References<\/h2>\n\n\n\n

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