World Emoji Day: Think your emojis are random? Psychologists say they may reveal more about you than you realise

How many emojis have you used today?

If you're like most people, you've probably dropped at least one into a WhatsApp chat, reacted to an Instagram post with a heart, or ended an email with a smiling face. We use them so instinctively that we barely notice. Yet these tiny digital icons have quietly transformed from colourful decorations into one of the internet's most widely spoken languages.

They soften criticism, add warmth to otherwise flat text and help convey emotions that words often fail to capture. Increasingly, emojis are even replacing words altogether. A single '😂' can stand in for an entire sentence, while '🙈', '❤️' or '😭' can instantly communicate embarrassment, affection or uncontrollable laughter.

Now, psychologists are beginning to ask a fascinating question: what if the way we use emojis says something about us?

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The answer, according to a growing body of research, is more nuanced than many people might expect. Scientists are not claiming that your favourite emoji defines your personality. But they are finding that our emoji habits—how often we use them, how many different ones we use and the situations in which we rely on them, can reflect deeper aspects of how we think and communicate.

The science behind our emoji habits

Researchers from Oklahoma State University and Loyola University Chicago recently explored whether there is a relationship between personality and emoji use in a study published in Current Psychology.

Across two phases of research involving nearly 900 university students, participants completed established psychological assessments measuring the widely recognised "Big Five" personality traits. Those who agreed also allowed researchers to analyse their public posts on X, formerly Twitter. Rather than looking at individual emojis, the researchers examined how frequently participants used them and how varied their emoji choices were.

One finding stood out.

People who scored lower on openness to experience, a personality trait associated with curiosity, imagination and willingness to embrace new ideas, were generally more frequent emoji users. As the researchers wrote, "Those reporting lower levels of openness use the most emojis."

Interestingly, the study found no meaningful relationship between emoji use and the other four major personality traits after accounting for gender differences.

That doesn't mean emojis reveal everything about a person's character. Instead, the findings suggest that everyday digital behaviours can mirror broader communication preferences, even if only subtly.

Not all studies point in the same direction

The latest research is only one piece of a much larger puzzle.

Previous studies have reached different conclusions. Another Current Psychology study led by Oklahoma State University's Shelia M. Kennison linked frequent emoji use with different personality patterns, including traits associated with the so-called Dark Triad: narcissism, Machiavellianism and psychopathy. Those associations varied between men and women, while extroverts also emerged as some of the platform's most active emoji users.

Researchers believe these differences are hardly surprising. Personality is complex, and digital communication changes depending on age, culture, social circles and even the platform being used. A laughing emoji sent in a family WhatsApp group may serve an entirely different purpose from the same emoji posted on X.

What the research consistently suggests, however, is that emojis are not random decorations. They are part of how people present themselves online.

Emojis are replacing more than just words

The researchers also discovered something equally intriguing about language itself.

People who used emojis more frequently tended to write more about relationships, emotions and family life. Their posts contained more emotionally charged words but fewer analytical or abstract ones. They also relied more heavily on personal pronouns such as "I" and "you".

In other words, emojis are becoming woven into the structure of online communication rather than sitting alongside it.

The study also suggests that emojis often act as emotional modifiers. Instead of changing the meaning of a message, they change how it is received. A sentence that might otherwise appear blunt or confrontational can suddenly seem playful or apologetic when paired with the right emoji.

As the authors noted, "It may reflect a communication strategy in which one uses emojis to soften the emotional impact of a negative sentiment."

Anyone who has ever ended a difficult message with 😅 or 😊 will probably recognise that instinct.

The tiny icons shaping digital identity

Emojis have travelled a remarkable distance since they were first introduced in Japan in the late 1990s. What began as a simple way to make text messaging more expressive has evolved into a universal visual language understood across cultures and generations.

Today, technology companies, psychologists and marketers all study digital behaviour to better understand how people communicate online. Emoji use is becoming another small but meaningful piece of that picture.

That doesn't mean recruiters or dating apps should judge someone based on their favourite emoji. Nor can psychologists accurately profile a person simply by counting smiley faces.

But the research does underline an important point: the habits we dismiss as insignificant often reflect the way we connect with others.

On this World Emoji Day, the humble emoji deserves a little more credit. It is no longer just a cheerful addition to a text message. It has become part of our emotional vocabulary, a way of expressing humour, empathy, affection and even vulnerability in a world where so much of our communication now happens through screens.

And while your most-used emoji won't reveal your entire personality, it might just offer a glimpse into how you see, and share the world.