Why One Session Is Enough

Why knowing a pattern doesn’t stop it

Leaders who come to SSC can usually describe their pattern, say where it came from and predict when it will show up, and it still runs the meeting.

In 1977 the psychologists Richard Nisbett and Timothy Wilson reviewed the evidence on how well people can explain their own behaviour. They found we have little direct access to the processes behind our choices, and that the reasons we give are assembled afterwards from whatever sounds plausible. Chris Argyris found the same gap inside organisations: the way leaders say they work and the way they behave under pressure differ, and most can’t see the difference in themselves. Antonio Damasio’s research on emotion and decision-making adds the body, where the signal to act often registers as a feeling before any reasoning starts.

So a leader can finish a leadership programme agreeing with every word and still close down the room in Tuesday’s meeting. The pattern lives in automatic behaviour, laid down by earlier experience and strengthened each time it gets a result, and describing it leaves it running.

Why one session changes it

Memory reconsolidation

In 2000, Karim Nader, Glenn Schafe and Joseph LeDoux showed that a fear memory in rats, once recalled, has to be rebuilt to persist, and that interrupting the rebuild erased it. The finding challenged the long-held view that a memory is fixed once it has formed. Bruce Ecker, Robin Ticic and Laurel Hulley built a therapeutic method on it in Unlocking the Emotional Brain.

Single-session therapy

At Kaiser Permanente in California in the late 1980s, Moshe Talmon, Michael Hoyt and Robert Rosenbaum studied 58 outpatients who could have as many sessions as they wanted. Thirty-four of them (58.6%) chose to stop after one, and more than 88% of those reported significant improvement in the problem they came with. In 2025 a team led by Jessica Schleider at Northwestern University published an umbrella review of 24 systematic reviews covering 415 trials. Twenty of the reviews found positive effects, and across the meta-analyses single sessions improved outcomes for young people and adults alike.

SSC applies both to leadership on one principle: reach the pattern while it is active, and it changes in a single sitting.

What happens in the ninety minutes

The session is online and runs for ninety minutes. Before any work on the pattern, it is mapped: a recurring situation is broken into its parts (the people involved, the pressures acting on it, its history and the leader’s own position in it). The map shows which reflex keeps the pattern running, and that reflex is what we clear.

Why it reaches the people around the leader

A leader’s reflexes set the conditions for everyone who reports to them. Amy Edmondson’s 1996 study of hospital nursing units found that the units with the strongest leadership and working relationships reported more medication errors, because people there felt safe enough to say so. Her 1999 paper named that condition psychological safety. Google’s Project Aristotle, a two-year study of 180 of its own teams, found it was the most important of the five dynamics that set effective teams apart. A 2017 meta-analysis by Lance Frazier and colleagues, drawing on 136 samples and more than 22,000 people, linked it to learning, engagement and performance.

What we measure

The measurable unit is behaviour. At intake we agree the markers with you: the decision that keeps circling, the conversation nobody is having, how long things take to resolve. We check them before the session (T0) and again at T2, T6 and T12. Where a business already runs a 360 or an engagement survey, its next cycle gives an independent read of whether the team has noticed a difference, and we can build that into the markers.

The cases

Where SSC fits

SSC works on how leaders behave under pressure. A session sits alongside coaching and leadership programmes and clears the reflex those programmes would otherwise have to work around.

The intake call finds the pattern worth working on.