Luis Velasquez, writing in Harvard Business Review on 7 May 2026, opened a question most leadership programmes quietly avoid. When a strong leader starts creating friction, the organisation almost always defaults to a single explanation, which is that the leader needs to change. Velasquez argues that the friction is usually not one thing. It is one of four, sometimes a combination, and getting the diagnosis wrong is how high-impact leaders quietly get pushed out.
The four sources he names are capability, perception, identity and system. The piece opens with Anna, a high-tech executive whose CEO admired her decisiveness and clarity, and who then began receiving complaints that she "moves too fast" and "makes decisions before the rest of us are ready". The CEO's instinct, predictably, was to put her on a development plan aimed at her behaviour. The actual problem, on Velasquez's reading, sat somewhere else.
The Four Sources, In Practice
Velasquez's four labels are useful precisely because they look similar at the surface and resolve differently in the conversation.
- Capability. The leader genuinely lacks a specific skill the role demands. Strategic communication. Stakeholder reading. A particular technical fluency. This is the only one of the four that responds well to a development plan, and it is the one most often misdiagnosed onto leaders whose problem is one of the other three.
- Perception. The leader's behaviour is being misread. The same trait that reads as decisive to one stakeholder reads as overbearing to another. Anna's "moves too fast" is the classic perception case. The fix is not the leader's behaviour, it is the conversation the organisation is willing to have about which behaviour it actually wants.
- Identity. The leader does not fit the implicit picture of what a leader at this level "looks like" in this organisation. Gender, background, communication style. The friction is sitting in the unstated template, not in the leader's behaviour. McKinsey and LeanIn's Women in the Workplace 2025 data, finding 93 women promoted to manager per 100 men and 60 per 100 for Black women, names this layer at scale.
- System. The leader is doing exactly what their job requires, and the system is producing the friction. A new accountability they were told to enforce. A target they did not set. Friction the organisation actually wanted, until it arrived. Coaching the leader here is asking them to absorb the cost of a decision someone else made.
The diagnostic discipline Velasquez is pushing for is to slow the conversation down long enough to ask which of the four is in play, rather than treating "the leader is the problem" as a single hypothesis with one tool attached.
Why The Default Is Always Capability
There is a structural reason most leader-friction cases get filed under capability, and it is uncomfortable. Capability is the only one of the four that can be addressed without the organisation looking at itself. Perception requires senior stakeholders to admit the read was wrong. Identity requires the unstated template to be made visible. System requires the leadership team to own a decision they would rather not own. Capability lets the friction be a one-person problem with a one-person fix. It is the cheapest diagnosis to make, and the most expensive to be wrong about.
The cost shows up in three predictable places. Promotion decisions get made on the wrong inputs. Succession pipelines stall because the high-impact leaders most likely to surface friction are the ones most likely to be filtered out. And the talent layer below learns, quickly, which kinds of behaviour the system rewards and which it punishes. Two of Sidestream's recent posts touch the same wound from different angles. The Edelman Trust Barometer 2026 finding that 42% of employees would rather switch departments than report to a manager with different values is, in Velasquez's language, a perception-and-identity case wearing a capability mask. DDI's Global Leadership Forecast 2026, with only 8% of executives rated strong at leading change, is what you get when capability development is asked to do the work of all four diagnoses at once.
What Most Organisations Try, And Why It Misses
The standard response to a leader creating friction is a 360, a coach, and a development plan. None of the three are wrong, all of them assume capability is the source. The 360 reflects perception back at the leader as if perception were the leader's own data to manage. The coach works on behaviours that, if the source is system or identity, were never the lever. The development plan creates a paper trail that, six months later, becomes the basis for the exit conversation.
What is missing is a forum in which the friction itself can be looked at honestly by the people creating it, the people receiving it, and the leader being labelled. That forum needs to be safe enough that the perception and identity sources can be named without anyone being the villain, and structured enough that the system source can be made visible without collapsing into politics. Almost no organisation has a venue for this conversation, which is part of why the default keeps being capability.
What Actually Works
Two findings from the wider behavioural-science literature are relevant. The first is Amy Edmondson's 1999 work in Administrative Science Quarterly on psychological safety, which establishes that whether a team will surface a misread depends on the senior person's first reaction, not on the team's intentions. The second is the practice gap. The conversation Velasquez wants leadership teams to have is not a conversation any of them have rehearsed. It is run, when it is run at all, under pressure, in the wrong format, with the wrong people in the room.
In Sidestream's own academic behaviour-change work, building on research from UCL, Cambridge and Bocconi, participants who learned a communication skill through immersive role-play scored roughly 20% higher on observed behaviour than those who learned the same content through video or slide-show training. Self-rated confidence did not predict observed performance: a Dunning-Kruger pattern we designed out of subsequent studies by replacing self-reports with behavioural measurement. The implication for the four frictions is direct. The diagnostic conversation has to be rehearsed before it is run live, with the same realism that a difficult board meeting would get.
What We Do About It
Our Change Resilience Lab builds a bespoke simulation around the leadership team that is actually running the friction. Professional actors play the stakeholders who are reading the leader as decisive, the ones reading her as overbearing, the colleague whose system change she is enforcing, and the leader herself. The leadership team has to diagnose, in real time, which of the four sources is producing the noise and what the right next move is. The room learns to slow the conversation down enough to make the diagnostic before the default kicks in. The same scenario gets run more than once. By the third pass, the four-source test is the new default.
When a leader gets branded a problem, the cheapest diagnosis is always capability. It is also, four times out of five, the wrong one.
The four-source test is not new psychology. It is a discipline of slowing down a conversation the organisation has already decided to have. Read our piece on the supporting-character leader for the same theme from a different angle, or book a call to look at what the diagnostic would look like in your team.
Book a free 30-minute diagnostic call → or read about our research-backed approach.