How Apps Get in Your Head


Chapter 12: Social Psychology

Learning Outcomes

  • Describe how psychological principles are used in digital environments
  • Evaluate the ethical implications of persuasive technology
  • Apply social psychology concepts to digital media and app design

Key Terms

cognitive dissonance
psychological discomfort that arises from a conflict in a person's behaviors, attitudes, or beliefs that runs counter to one's positive self-perception
normative social influence
conformity to a group norm to fit in, feel good, and be accepted by the group
persuasion
process of changing our attitude toward something based on some form of communication
social exchange theory
humans act as naïve economists in keeping a tally of the ratio of costs and benefits of forming and maintain a relationship, with the goal to maximize benefits and minimize costs

The Scroll Trap

Sy, a psychology major, was researching persuasive design for a class project when he realized he was a case study himself. "I open my phone to check one thing," he thought, "and 20 minutes later, I'm still scrolling."

A person holding a phone

He noticed that apps treat likes, notifications, and personalized content as rewards. "It's like they know what I want before I do," he joked. But the more he studied the design, the less funny it seemed.

Sy learned that platforms use persuasion techniques rooted in psychology. Infinite scroll, streaks, and push notifications are designed to keep users engaged. These features exploit normative social influence (the desire to be liked) and social comparison, where users evaluate their worth based on others' posts.

"I start feeling anxious when my posts don't get enough likes," Sy reflected. "Then I post something I don't even care about, just to get attention." This led to cognitive dissonance: a mismatch between his values and his behavior.

Sy also recognized elements of self-perception theory. "I thought I was just using apps casually," he realized, "but my behavior suggests I care a lot about how I'm seen."

1. On Your Own

What illustrates cognitive dissonance? Select the best answer.

The Psychology Behind the Platform

Social media platforms are designed to maximize engagement, often by triggering psychological responses. Social exchange theory explains why users stay: They perceive benefits (connection, validation) that outweigh the costs (time, anxiety).

An illustration of a smartphone with multiple notifications

Normative social influence encourages conformity, while social comparison fuels competition. These dynamics can lead to compulsive use, especially when paired with variable reinforcement: rewards that appear unpredictably, such as likes or comments.

Understanding these mechanisms helps users make informed choices. It also raises ethical questions about how technology shapes behavior.

2. On Your Own

Determine whether the following statement is true or false.

Normative social influence involves conformity to a group norm to fit in, feel good, and be accepted by the group.

Sy's Reframe

After completing his project, Sy changed how he used social media. He turned off notifications, unfollowed accounts that triggered comparison, and set time limits. "I still use the apps," he commented to his friends. "But now I'm aware of what they're doing, and what I'm doing."

A person switching off notifications on a phone

Sy's experience shows how psychological insight can lead to healthier digital habits. By recognizing persuasive design and its effects, users can reclaim control over their online behavior.

3. On Your Own

What are examples of persuasive design? Select the two that apply.

Explore the Concept

Check out this video on how our phones affect our brains and their ability to focus.

Reflect & Respond

Answer the following questions to reflect on key ideas from the case study. Remember to print your work before leaving this page!

  1. How do social media platforms use psychological principles to influence behavior?
  2. What is the role of cognitive dissonance in online self-presentation?
  3. How can users apply self-perception theory to understand their digital habits?
  4. Reflect on your own app usage. What features keep you engaged, and why?
  5. What are the ethical implications of persuasive design in digital platforms?

References

Friedman, V. J., Wright, C. J. C., Molenaar, A., McCaffrey, T., Brennan, L., & Lim, M. S. C. (2022). The use of social media as a persuasive platform to facilitate nutrition and health behavior change in young adults: Web-based conversation study. Journal of Medical Internet Research, 24(5), Article e28063. https://doi.org/10.2196/28063
This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0).

The Wall Street Journal. (2019, May 20). How smartphones sabotage your brain's ability to focus | WSJ [Video]. YouTube. https://youtu.be/Ig6I3prnlnE?si=pGLup5FFaE61X-7L

Photo Credits

Pixel Sculptor on Adobe Stock. "Close-up of hands holding a smartphone (1)."

Creative Habits on Adobe Stock. "Smartphone with notification bell and message icons. Smartphone with notification message and email icons on yellow background."

newlifestock on Adobe Stock. "person interacts with smartphone displaying toggle switch for turning off notifications, illustrating visual metaphors of ethical messaging."