"Oh, he's a D, that's why he's so blunt." "She's high Influence, don't expect it on time." Anyone who's worked somewhere that adopted a profiling tool has probably heard lines like these. It's a shame, because these tools were meant to open conversations — not to close them.
Used with care, self-knowledge changes the quality of teamwork. Used as a label, it becomes one more way of not really seeing people. The difference lies less in the test than in how it's used.
What a profile can (and can't) tell you
The DISC model traces back to psychologist William Moulton Marston, who in the late 1920s described patterns of emotional behavior in ordinary people. Modern tools inspired by his work group behavior into four styles: Dominance, Influence, Steadiness and Conscientiousness. John Holland's RIASEC model, for its part, describes six types of vocational interest: Realistic, Investigative, Artistic, Social, Enterprising and Conventional.
Both are useful for one specific thing: giving people a shared vocabulary for preferences. Neither measures competence, intelligence, character or potential. And neither describes the whole person.
It's worth remembering what social psychology showed decades ago, too. Walter Mischel and other researchers highlighted how much behavior varies with the situation. The same person can be direct in a crisis and patient in mentoring. A profile describes tendencies, not a fixed script.
Why profiles shouldn't be hiring filters
It's tempting to use a profiling test to decide whom to hire or promote. There are good reasons not to.
- That's not what they were built for. Many behavioral profiling tools, including several commercial versions of DISC, haven't been validated to predict job performance, and some of their own publishers advise against using them for selection.
- Self-report is easy to adjust. In a hiring process, people answer with an eye on what the company wants to see.
- A mix of styles is an asset. A team made only of "Dominants" or only of "Steadies" loses important perspectives.
- There are ethical and legal risks. Decisions based on instruments that lack validity for the intended purpose can be unfair and discriminatory.
For selecting people, organizational psychology research points to better-suited methods, such as structured interviews and work samples, run by trained professionals.
Where self-knowledge really helps
To start conversations. Instead of "you're a C, so you're detail-obsessed", try: "Your result says you value precision. Does that ring true? When does it show up most?". The profile becomes an invitation, not a verdict.
To agree on ways of working. Some teams write a "user manual for me": a short page where each person shares how they like to receive information, how they do their best work, and what tends to be misread about their style. Profiles help draft that page, but the person always has the final word.
To give and receive feedback. Knowing that one colleague prefers bluntness and another needs context helps you choose the form — never to hide the substance. A simple model popularized by the Center for Creative Leadership is to describe the Situation, the observed Behavior and its Impact. It works with any profile because it deals in facts, not labels.
To make sense of conflict. Much friction isn't about character but about pace and priorities. The person who wants to decide fast and the one who wants to analyze more aren't on opposite sides; they're protecting different things the team needs.
Keeping profiles from becoming labels
- Speak in the first person. "I tend to..." is different from "She is...".
- Never use a profile as an excuse. "I'm a D, so I talk like this" isn't self-knowledge; it's a shortcut.
- Respect privacy. Sharing a result should be each person's choice, not a requirement.
- Remember that context matters. Pressure, workload and culture shape behavior as much as personal style does.
- Be wary of overly generic readings. In a classic 1949 experiment, psychologist Bertram Forer showed that we tend to accept vague descriptions as if they were tailored to us. Good use of profiles always comes back to concrete behavior.
For leaders: questions to ask before rolling out a test
- What will we use this for? If the answer is "to decide who stays" or "to find out who's difficult", better not to use it.
- Who will see the results? Agree on it beforehand, in writing if possible, and make clear that each person decides what to share.
- How will we talk about it? A test without conversation just becomes a new label. Set aside time for each person to say what they recognized, and didn't, in their own result.
- What happens when someone disagrees with their profile? They're right by default. They know their own life better than any questionnaire does.
A good practice is for the leader to share first — including the parts where the result didn't fit. That shows, in practice, that a profile is a starting point, not a sentence.
Psychological safety first
Harvard researcher Amy Edmondson showed that teams learn better when people feel safe to speak up, disagree and admit mistakes without fear of humiliation. Profiling tools work far better in that kind of environment. Where mistakes are punished, any test becomes just another form of surveillance.
An invitation
Ethea's DISC test is a good starting point for observing yourself at work: how you tend to act under pressure, what energizes you, how you communicate. Take it for yourself, read the result with curiosity and, if it resonates, bring the questions — not the labels — to your next team conversation.