Big Five: Reading the Five Traits in Your Message Style

The Big Five put to the test in your messages: when writing reveals your relationship personality

As a CBT psychotherapist and founder of Psychologie et Sérénité, I work with many couples who want to understand each other better and improve their communication. My patients often tell me how hard it is to grasp their partner's intentions, to decode silences or to interpret reactions. Spoken dialogue, by its fluidity and immediacy, can sometimes mask deeper dynamics. But what about the written word?

At ScanMyLove, we are convinced that written conversations — your texts, WhatsApp, Messenger — are a goldmine of psychological information. Far from being simple, harmless exchanges, these messages, through their repetition and their timestamps, freeze behavioural and emotional patterns that would otherwise be impossible to grasp. A single message can always be reinterpreted, but dozens or hundreds of timestamped messages trace a pattern that cannot be rewritten. Writing freezes the sequence and makes legible what speech makes elusive.

Today, I invite you to explore a fundamental clinical model: the "Big Five", those five broad personality traits, and how they show up concretely in the writing style of your relationship messages. Understanding these manifestations can transform how you perceive your relational dynamic.

The Big Five: a compass for understanding the other person

The Big Five model, born of decades of research in personality psychology, describes five major dimensions that influence our thoughts, our emotions and our behaviours. These traits are: Openness to Experience, Conscientiousness, Extraversion, Agreeableness and Neuroticism (or emotional instability).

Each of us possesses these traits to varying degrees, and it is their combination that shapes our unique personality. But how do these traits translate into the way we exchange messages with our partner in writing? A psychological analysis of your messages, using clinical models and scientific methods, can reveal these nuances.

1. Openness to Experience: curiosity and imagination in writing

A person who scores high on Openness to Experience is curious, imaginative, and enjoys novelty and abstract ideas.

How to spot it in messages: * Variety of topics: Conversations are rarely monotonous. They cover diverse subjects, from philosophical reflections to artistic discoveries, by way of unexpected projects. * Rich, nuanced language: Use of an extensive vocabulary, metaphors, cultural references. * Original suggestions: Messages that propose new activities, books, culinary experiences or trips. Example:* "I watched a fascinating documentary on astrophysics yesterday, it made me think of that question we were asking about the universe. We should go and see that digital art exhibition this weekend, what do you think?" * Receptiveness to the other's ideas: Shows genuine interest in the partner's suggestions or thoughts, even when they are off the beaten track.

Conversely, low openness may translate into more factual messages, focused on daily life and routines, with little exploration of the imaginary or the unknown. Analysing the occurrences of certain key words, or the proportion of "proposing" versus "describing" messages across hundreds of exchanges, can bring this trait to light.

2. Conscientiousness: organisation and reliability

Conscientiousness is characterised by organisation, discipline, reliability and a sense of duty.

How to spot it in messages: * Clear, precise messages: Avoiding ambiguity, getting straight to the point. * Planning and follow-up: Messages that arrange appointments, remind about tasks, confirm plans. Example:* "I've noted the dinner at your parents' on Saturday, I've booked the restaurant for Friday evening at 8pm. Don't forget to send the email about the insurance tomorrow morning." * Keeping commitments: Confirms that a task has been completed, or flags an unexpected problem along with solutions. * Punctuality in replies: Generally answers quickly and reliably, unless a major obstacle has been signalled.

A lack of conscientiousness may show up as vague messages, frequent forgetting, unexplained delays or a failure to follow up on important conversations. By observing the regularity of reminders or confirmations, or the absence of follow-up on certain discussions, the pattern becomes obvious.

3. Extraversion: energy and sociability

Extraversion is associated with sociability, energy, enthusiasm and a tendency to seek stimulation.

How to spot it in messages: * Frequency and length of messages: A tendency to send messages more often, and sometimes longer ones, even about light topics. * Enthusiasm and expressiveness: Use of expressive emojis (😂🥳), capital letters and exclamation marks to convey excitement. Example:* "Amazing day! We did a brilliant hike and I met some really lovely people! See you tonight, I'm buzzing!!" * Social initiative: Suggesting seeing friends, organising outings, sharing social anecdotes. * Direct, assertive language: Clearly expresses their desires and opinions.

A more introverted person will tend towards more concise, less frequent messages, with more measured expressiveness. They may prefer deeper and less numerous exchanges. Patterns of frequency, emoji use and intensity of language are key indicators.

4. Agreeableness: kindness and cooperation

Agreeableness reflects kindness, compassion, cooperation and the capacity to trust.

How to spot it in messages: * Positive, empathetic language: Messages of support, comfort and encouragement. Use of affectionate words and expressions. Example:* "I understand you're tired. Take care of yourself, I'm here if you need to talk. Good luck with your day!" * Seeking consensus: A tendency to defuse tension, propose compromises and avoid direct confrontation. * Apology and appreciation: Sincere apologies, thanks, and acknowledgement of the partner's efforts. * Active listening (even in writing): Asks about the other person's wellbeing, cares about their feelings.

A low score on Agreeableness may show up as more direct messages, sometimes perceived as blunt, a tendency towards criticism or confrontation, and fewer expressions of emotional warmth. As John Gottman's work on the 4 Horsemen of Gottman highlights, criticism and contempt, even subtle, can erode a relationship. Analysing turns of phrase, markers of empathy and attempts at reconciliation is essential here.

5. Neuroticism (or Emotional Instability): managing stress and anxiety

Neuroticism concerns the tendency to experience negative emotions such as anxiety, sadness, anger or insecurity.

How to spot it in messages: * Expression of worries: Messages that convey fears, doubts, worst-case scenarios. Example:* "I'm worried about tomorrow's meeting, what if it goes badly? I'm afraid you'll let me down tonight because of your work." * Intense emotional reactions: Use of many question marks, capital letters to express panic or frustration. * Requests for reassurance: Recurring messages to check on affection, loyalty