In an earlier post, I made the case for why assessments matter in leadership development — how they replace guesswork with evidence, turn vague feedback into specific development targets, and give leaders language for patterns they could feel but couldn’t name. If you haven’t read that one, the core idea is that assessments serve as mirrors (reflecting what’s actually happening) and maps (providing direction for where to go). They’re not verdicts. They’re data points and conversation starters.
This post is the practical companion. The assessment landscape is enormous — there are hundreds of instruments on the market, and the differences between them aren’t always obvious. Over 20 years of using assessments in coaching and organizational consulting, I’ve become certified in 15+ tools. But I don’t use all of them equally. Six instruments form the core of my assessment practice because they answer fundamentally different questions, are backed by strong research, and produce insights that consistently change the development conversation.
Here’s what each one does, when to use it, and how they work together.
The Six Tools That Matter Most
Hogan Suite (HPI, HDS, MVPI)
What it measures: The Hogan is actually three assessments in one. The HPI (Hogan Personality Inventory) measures how you show up on a normal day — your “bright side” personality. The HDS (Hogan Development Survey) reveals what happens under stress — the derailers that emerge when you’re tired, anxious, or under pressure. And the MVPI (Motives, Values, Preferences Inventory) maps what drives you: what kind of environment you thrive in, what you value, and what work means to you.
When to use it: Executive coaching and senior leader development. This is my go-to for C-suite and VP-level clients because it provides the deepest, most nuanced picture of how a leader operates. The HDS in particular is uniquely valuable — it’s the only widely used assessment that specifically measures career derailers. When a leader is told they need to “work on executive presence” or “be more decisive,” the Hogan can pinpoint exactly what’s happening at a behavioral level.
What makes it different: Depth. Most assessments show you one dimension of a person. Hogan shows you three — how they lead at their best, how they derail under stress, and what motivates them underneath. Used together, the three reports create a multidimensional picture that no single instrument can match.
EQ-i 2.0 / EQ 360
What it measures: Emotional intelligence across 15 specific dimensions, organized into five composites: self-perception, self-expression, interpersonal skills, decision-making, and stress management. The EQ 360 version adds external perspectives — how others experience your emotional intelligence, not just how you report it yourself.
When to use it: Leaders whose challenges are interpersonal rather than technical. The executive who’s brilliant strategically but alienates the team. The manager who avoids conflict because their empathy is high but their assertiveness is low. The leader who makes impulsive decisions under pressure because their impulse control is a development area. The EQ-i gives you specific, measurable targets for development — not just “improve your EQ” but “your assertiveness is in the 22nd percentile while your empathy is in the 88th, and that imbalance is why you over-accommodate and under-advocate.”
What makes it different: Specificity. Most EQ frameworks are vague. The EQ-i 2.0 provides 15 separate scores, each with clinical-grade norming, which means you can isolate exactly which dimension of emotional intelligence needs work. The 360 version is particularly powerful for senior leaders who get less honest feedback from their teams.
CliftonStrengths (formerly StrengthsFinder)
What it measures: Your natural talent patterns across 34 themes, identifying what you do naturally and consistently well. The core insight is that your greatest development potential lives in your strengths, not your weaknesses.
When to use it: High-potential development, career planning, and team composition. CliftonStrengths is particularly effective early in a coaching engagement because it’s inherently energizing — you’re working from a foundation of what’s right about you, not what’s broken. It’s also excellent for team applications, where mapping each member’s strengths reveals complementary patterns and potential blind spots in the team’s collective capability.
What makes it different: Positive psychology foundation. Where Hogan and EQ-i identify areas for growth and risk management, CliftonStrengths anchors development in what a leader does best. The combination of a strengths-based assessment with a derailer-focused assessment like Hogan creates a complete development picture: amplify what works, manage what gets in the way.
TKI (Thomas-Kilmann Conflict Mode Instrument)
What it measures: Your default approach to conflict across five modes: competing, collaborating, compromising, avoiding, and accommodating. Most people have one or two dominant modes and significantly underuse others.
When to use it: Any leader who struggles with difficult conversations — which, in my experience, is most leaders. The manager who avoids every conflict until it explodes. The executive who competes by default and wonders why nobody pushes back. The director who accommodates everyone and then resents the outcomes. The TKI gives leaders a framework for understanding that conflict isn’t one thing — it’s five different strategies, each appropriate in different situations.
What makes it different: Immediacy. The TKI is the fastest assessment to move from insight to behavior change. A leader can take the TKI, get debriefed, and apply a different conflict strategy in a meeting the next day. It’s also the best team assessment for surfacing why a group gets stuck in unproductive patterns.
360° Feedback
What it measures: How others actually experience your leadership. Gathers confidential input from your manager, peers, and direct reports on specific leadership behaviors. The gap between how you see yourself and how others see you is where the most powerful development insights live.
When to use it: Senior leaders who aren’t getting honest feedback (which is most senior leaders). The higher you go in an organization, the less candid people become with you. A 360 provides the external perspective that your direct reports are thinking but not saying. It’s also valuable as a pre-and-post measure in coaching engagements — administer it at the beginning, do the development work, and administer it again to quantify behavior change.
What makes it different: External validation. Every other assessment on this list is self-report — it tells you something about how you see yourself. A 360 tells you how others see you. That external perspective is often where the most uncomfortable and most valuable insights come from.
DiSC (TTI version)
What it measures: Behavioral style across four dimensions: Dominance, Influence, Steadiness, and Conscientiousness. Reveals how you communicate, make decisions, respond to pressure, and interact with different styles.
When to use it: First-time coaching clients, team workshops, and situations where you need a quick, accessible starting point. DiSC has the lowest barrier to entry of any assessment on this list — the language is intuitive, the results are immediately relatable, and people can start applying the insights the same day. I use the TTI version because it integrates motivational drivers with behavioral style, adding a dimension that the standard DiSC doesn’t capture.
What makes it different: Accessibility. DiSC isn’t the deepest tool on this list, but it’s the most approachable. For leaders who have never taken an assessment before, DiSC is an excellent on-ramp. For team workshops where you need a shared language in a single session, it’s hard to beat.
How to Choose: Match the Tool to the Question
The most common mistake organizations make with assessments is using the same tool for every situation. DiSC is excellent for team communication but won’t tell you about career derailers. CliftonStrengths is energizing for development but won’t reveal how a leader handles conflict. The tool should always be selected for the question you’re trying to answer.
Here’s a practical decision framework:
- Comprehensive executive assessment: Hogan Suite + EQ 360 + 360° Feedback
- Senior leader development: Hogan (HPI + HDS) + CliftonStrengths + 360° Feedback
- High-potential development: CliftonStrengths + EQ-i 2.0 + DiSC
- First-time manager: DiSC + TKI + CliftonStrengths
- Conflict and difficult conversations: TKI + EQ-i 2.0
- Team development workshop: DiSC (team map) + TKI (team profile) + CliftonStrengths (team grid)
Notice that most of these recommendations combine two or three instruments. That’s intentional. Each assessment illuminates a different facet of the person. Used together, they create a multidimensional picture that’s far richer than any single tool can provide. The Hogan shows you the personality structure; the EQ-i shows you the emotional intelligence landscape; the CliftonStrengths shows you the natural talent base; the 360 shows you how it all lands with the people around you.
The Debrief Is Where the Value Lives
I’ll end with the most important thing I’ve learned about assessments in 20 years of using them: the instrument is only as valuable as the interpretation. A Hogan report sitting in someone’s inbox is a PDF. A Hogan debrief with a practitioner who connects the data to the leader’s real-world context, identifies the 2–3 patterns that matter most, and translates the findings into specific behavioral experiments — that’s where development starts.
Understanding your profile is maybe 10% of the value. The other 90% is application and integration over time. That’s why every assessment we administer includes a dedicated debrief session, and why we typically embed assessment insights into an ongoing coaching engagement rather than treating the assessment as a standalone event. If your organization has used assessments before and nothing changed, the problem almost certainly wasn’t the tool. It was what happened — or didn’t happen — after the report was delivered.
Not sure which assessment is right for your situation? Download our free Leadership Assessment Guide for a side-by-side comparison of each tool, or schedule a discovery call and we’ll recommend the right instrument — or combination — based on what you’re trying to develop.
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