You know their strengths. You also know their development areas: the skills that are underdeveloped, the patterns that hold them back, the gaps between where they are and where they need to be.
Do they know what you know?
Maybe you’ve told them the positive parts. Strengths are easy to discuss; they feel good to share and receive. But the development areas? Those conversations are harder. More awkward. Easier to defer.
So they move through their career with an incomplete map. They know what they’re good at but not where they’re struggling. They optimize strengths while blind spots persist. And you, who could have given them the full picture, kept half of it to yourself.
If feedback or a 360 review pointed you here, your assessments aren’t complete. The positive is flowing; the developmental isn’t.
The Full Picture Requirement
Zenger and Folkman’s research on leadership effectiveness identifies accurate assessment (of both strengths and development needs) as crucial for development. Partial feedback produces partial growth. People need the whole picture to develop whole.
The challenge is that strengths and gaps require different conversations. Telling someone what they’re good at is pleasant. Telling someone where they struggle isn’t. The asymmetry in difficulty creates asymmetry in what gets shared.
But development requires both. Strengths tell people what to leverage. Gaps tell them what to address. An assessment that’s only positive is incomplete, and unhelpful in the way that incompleteness always is.
If you only tell people what they’re good at, you’re giving them half a map and calling it navigation.
What Incomplete Assessment Costs
When leaders share only strengths or avoid honest discussion of gaps, specific development problems emerge:
Blind spots persist. They don’t know what they don’t know. The development areas continue unchecked because no one has named them. Years pass with the same gaps.
Strengths get over-indexed. When all feedback is positive, people assume they should just do more of what they’re already doing. They double down on strengths while ignoring the areas that might limit their advancement.
Promotions get blocked mysteriously. “They just need a little more time” often covers for “they have development areas we haven’t told them about.” The person doesn’t understand why advancement isn’t happening because the actual reason was never shared.
Trust erodes when truth surfaces. Eventually, the gaps become visible (through a passed-over promotion, a failed assignment, a crisis that reveals the weakness). The person realizes you knew and didn’t say. The belated honesty feels like betrayal.
The Masks of Incomplete Assessment
The encourager. Focuses exclusively on positive feedback because it feels supportive. The support is incomplete because it’s missing the information that would actually help them grow.
The confrontation-avoider. Knows the development areas, has the language ready, keeps finding reasons not to have the conversation. The assessment exists; the sharing doesn’t.
The implication-user. Hints at development areas without stating them clearly. “You might want to work on X” rather than “X is holding you back.” The implication can be missed or dismissed.
The review-cycle-waiter. Saves honest assessment for formal occasions, by which point it’s too accumulated and too formal to be received well.
Building Honest Assessment Practice
Giving accurate assessments of both strengths and development areas requires committing to completeness, even when completeness is uncomfortable.
Start with purpose. “I want to help you grow” before “here’s what I see.” The context makes the assessment feel like investment, not criticism. The development frame matters.
Balance within conversations. Don’t have the “strengths conversation” and the “gaps conversation” separately. Discuss both together: “Here’s what you do exceptionally well, and here’s what, if developed, would make you even more effective.” The balance models integrated assessment.
Be specific about both. “You’re great with clients” is too vague to be useful. “Your ability to quickly identify unstated concerns and address them directly builds trust exceptionally fast” is specific. The same specificity applies to development areas: name the behavior, the impact, the opportunity.
Distinguish between facts and interpretation. “I’ve observed X” is different from “I think you’re a Y.” Assessments grounded in observable facts are easier to receive and act on than characterizations of who someone is.
Make development areas actionable. A gap identified without a path forward is just a label. “Here’s the development area, and here’s what I think you could do about it” turns assessment into development.
Revisit over time. Assessments shouldn’t be one-time events. People develop. Gaps close. New ones emerge. “How do you think this development area is progressing?” keeps the conversation alive.
Own your perspective. “This is how I see it” acknowledges that your assessment is a perspective, not absolute truth. The ownership creates space for dialogue while still communicating clearly.
Honest assessment isn’t about being harsh. It’s about being complete.
The Gift of Clarity
Giving honest assessments of others’ strengths and development areas is one of the behaviors we measure in leadership assessments because it’s the foundation of targeted development. Strengths without gaps leaves people partly blind. Gaps without strengths leaves them demoralized. The honest, complete picture is what enables real growth.
There’s something to examine here about discomfort. Discussing development areas is harder than discussing strengths. The discomfort is real. But the discomfort of the conversation is much less than the cost of the person not knowing.
Think about each person you develop. Do they know what you actually see? Both sides? If you’ve been holding back the development areas, they’re operating with incomplete information. They deserve better.
The honest assessment is a gift, even when it’s hard to give. Especially when it’s hard to give.