Using Personality Assessments to Build Stronger Sales Teams

I have been using personality assessments in my consulting practice for over twenty years. In that time, I have assessed hundreds of salespeople, dozens of sales teams, and worked with organizations ranging from five-person startups to national sales forces with hundreds of reps. I can say without qualification that behavioral assessments are one of the most underutilized tools in sales leadership.

The criticism I hear most often is that assessments "put people in boxes." That criticism comes from people who have never used a good assessment properly. A well-designed behavioral assessment does not label people or limit them. It provides a language for understanding natural tendencies, communication preferences, strengths, and potential blind spots. That understanding, applied thoughtfully, improves hiring, coaching, team dynamics, and customer interactions in ways that are measurable and lasting.

The tool I use is Extended DISC, and I chose it for specific reasons. It is scientifically validated with strong reliability data. It differentiates between a person's natural behavioral style and their adjusted (or adapted) style, which is a distinction most assessments miss. And it provides practical, actionable insights that translate directly into sales performance improvement.

But the principles I am going to discuss apply regardless of which validated assessment you use. DISC, Myers-Briggs (MBTI), Predictive Index, Caliper, Hogan. The specific instrument matters less than using one consistently and well.

Application 1: Smarter Hiring Decisions

The Bridge Group reports average sales rep turnover at 34% annually. DePaul University puts the cost of replacing a salesperson at $97,690. A significant portion of that turnover comes from behavioral mismatch: hiring someone whose natural tendencies do not align with the demands of the specific sales role.

Not every sales role requires the same behavioral profile. A hunter role that demands high outbound activity, cold calling, and comfort with rejection requires different natural tendencies than a farmer role focused on relationship management, consultative problem-solving, and long-term account development. A transactional sales environment with short cycles and high volume attracts a different profile than a complex enterprise sale with eighteen-month cycles and multiple stakeholders.

When I work with a client on hiring, the first step is profiling the role. What behaviors does this specific job demand on a daily basis? Then I assess the current top performers in that role to validate the profile against real-world success. The result is a behavioral benchmark that we screen candidates against.

I want to be clear: I never recommend hiring or rejecting someone based solely on an assessment score. The assessment is one data point alongside structured interviews, reference checks, and work simulations. But it is a powerful data point because it reveals tendencies that candidates cannot fake in an interview. A person's natural behavioral style is remarkably stable over time. Their interview performance is a one-time performance.

I had a client in financial services who was struggling with turnover in their business development role. They kept hiring experienced reps from their industry, and roughly half were failing within the first year. When I assessed the team, a clear pattern emerged. The successful reps all had high D (Dominance) and I (Influence) profiles. The failures were predominantly high S (Steadiness) and C (Compliance) profiles. These were smart, experienced professionals, but their natural tendencies did not match a role that required aggressive prospecting, comfort with ambiguity, and resilience under constant rejection.

Once we adjusted the hiring profile to screen for the right behavioral traits early in the process, their first-year retention in the role improved from 50% to over 80%.

Application 2: Individualized Coaching

CSO Insights found that sales coaching improves win rates by 28%. But generic coaching, where every rep gets the same feedback and the same development plan, produces generic results. Behavioral assessments allow you to personalize your coaching approach to each individual.

A high-D salesperson (decisive, direct, results-oriented) tends to rush through discovery because they are eager to get to the solution. Their coaching focus should be on patience, active listening, and thorough qualification. The coaching style that works with them is direct and challenging. They respond to competition and measurable goals.

A high-I salesperson (enthusiastic, persuasive, relationship-focused) tends to build great rapport but struggle with structure and follow-through. Their coaching focus should be on process discipline, CRM documentation, and timely follow-up. They respond to recognition, collaboration, and social accountability.

A high-S salesperson (patient, methodical, relationship-oriented) tends to excel at account management but struggle with prospecting and asking for the business. Their coaching focus should be on assertiveness, handling rejection, and closing techniques. They respond to a supportive, gradual development approach. Pushing them too hard produces anxiety, not growth.

A high-C salesperson (analytical, detail-oriented, quality-focused) tends to over-prepare and under-execute. They want to have every fact before making a call. Their coaching focus should be on taking action with imperfect information, managing analysis paralysis, and building conversational fluency. They respond to logical reasoning, data, and structured development plans.

These are generalizations, of course. Every individual is unique, and most people are blends of multiple styles. But even these broad patterns give a manager dramatically more coaching precision than a one-size-fits-all approach.

Application 3: Team Composition and Dynamics

When I assess an entire sales team, patterns emerge that explain both performance outcomes and interpersonal dynamics.

I assessed a team of twelve at a distribution company and found that ten of the twelve had high-I (Influence) profiles. They were all relationship builders. The team culture was warm, collaborative, and supportive. They also had the lowest new business development numbers in their division. Nobody on the team was naturally wired for the uncomfortable work of cold outreach and rejection tolerance. Their pipeline was almost entirely inbound and referral-based.

The solution was not to replace the team. It was to hire two additional reps with strong D-I profiles who could lead the outbound effort, and to implement structured prospecting blocks with accountability metrics for the existing team. Understanding the composition allowed us to design a strategy that played to the team's strengths while addressing the gap.

Team assessments also reveal potential friction points. A high-D manager overseeing a team of high-S reps will naturally push harder and faster than the team can comfortably absorb, creating stress and resentment. A high-I manager with a team of high-C reps will frustrate the team with lack of structure and detail. Understanding these dynamics does not eliminate the friction, but it makes it visible and manageable.

Application 4: Adapting to Customer Communication Styles

This is where assessments deliver value directly in the selling conversation. Forrester found that 82% of B2B decision-makers think sales reps are unprepared. Part of that perception comes from communication mismatch. A fast-talking, high-energy salesperson meeting with a detail-oriented, analytical buyer creates friction before the first slide.

When your team understands behavioral styles, they can read their customers and adapt. Is the buyer asking detailed questions about specifications and ROI calculations? That is likely a C-style buyer who needs data, accuracy, and time to analyze. Slow down, provide documentation, and do not pressure for a fast decision.

Is the buyer asking about outcomes, results, and bottom-line impact? That is likely a D-style buyer who wants efficiency, directness, and speed. Get to the point, respect their time, and present options with clear recommendations.

Is the buyer chatty, asking about your company culture and wanting to build a personal connection? That is likely an I-style buyer who makes decisions based on relationships and trust. Invest time in rapport, share stories, and demonstrate enthusiasm.

Is the buyer cautious, asking about implementation timelines, risk mitigation, and support structures? That is likely an S-style buyer who values stability and reliability. Provide references, emphasize your track record, and describe the implementation process in detail.

This is not manipulation. It is communication intelligence. You are adapting your style to match your customer's preferences, which is a form of professional respect.

Application 5: Conflict Resolution and Performance Management

When performance problems arise, behavioral insights provide context that makes the conversation more productive. Instead of "you are not making enough calls," the conversation becomes "I understand that your natural style is methodical and detail-oriented, and that cold calling feels uncomfortable because it involves a lot of ambiguity and rejection. That is a real challenge, and I want to help you develop strategies for managing that discomfort while still hitting the activity targets we need."

The first version creates defensiveness. The second creates partnership. The outcome is different not because the message is softer, but because it demonstrates understanding of the person, not just the metric.

Getting Started

If you have not used behavioral assessments with your sales team, I recommend starting with three steps. First, assess yourself. Understanding your own behavioral profile is the foundation. Your natural tendencies as a leader affect every interaction you have with your team. Second, assess your team. Map the behavioral composition and identify patterns. Third, use the insights in your next round of coaching conversations and observe the difference.

Objective Management Group found that 55% of salespeople lack basic selling skills. Behavioral assessments do not replace skill development, but they provide the insight that makes skill development dramatically more effective. You stop guessing about why someone is struggling and start understanding the behavioral dynamics behind the performance gap.

In thirty years of consulting, I have found very few tools that provide as much practical value per dollar invested as a well-implemented assessment program. The clarity it brings to hiring, coaching, team management, and customer communication is something you will wonder how you operated without.