conversation matters

Potentiation: Neurology and Knowledge Management

There is a wonderful term that cognitive neurologists use, “potentiation.” It’s a term that those of us that are involved in knowledge and learning could make great use of – no need for neurologist to have all the fun!

Here is what it means to a cognitive neurologist, as translated by an amateur with a few graduate courses in neurology. Information moves along neurons and when the information reaches an axon terminal, in order to go any further it has to jump the synaptic gap to the next neuron. It jumps the gap by producing a neurotransmitter that the next neuron picks up (neurologists say the neurotransmitter excites the next neuron) and off the information goes down the next neuron (and the next) until it gets to some important destination where the message tells your little finger to wiggle or you arrive at a brilliant new insight. Of course, it’s all a good deal more complex since that lone neuron is also exciting lots of other neurons and even turning some off – but for the purpose of thinking about how it impacts knowledge, lets stay simple.

Now it turns out that each time the neurotransmitter excites its neighboring neuron that pathway becomes stronger and can be more easily excited the next time. An example of a path that is very weak is that uncomfortable experience of meeting someone and ten minutes later not being able to remember her name. Each time the pathway is excited it becomes more potentiated, that is, more accessible the next time. Building the strength of synaptic communication is the neurological basis for learning.

Now here is the interesting part. The synaptic gap is excited, once, twice, three times, each time sending out one type of neurotransmitter. But if you really excite that next neuron over and over finally it releases a different kind of neurotransmitter, (one with a calcium base) and that type of neutrotransmiter has a hundred times more capability to excite the next neuron and produces Long Term Potentiation (LTP). It is not a linear progression- it is exponential. So an idea keeps exciting the next neuron gradually getting a little stronger each time, then there is a sudden burst and wham! the idea is now firmly fixed in your mind - LTP. Having achieved LTP the idea is easily brought to mind, the slightest hint or related idea will bring it to the fore. That makes it incredibly available for immediate use, like the expert chess players who with only a glance at the board can see potential patterns that might emerge during the game. Learning is not linear – it is exponential!

The first time we hear a very new idea serves as a kind of preparation for later understanding that idea; the connection is weak, but it’s there – potentiation has occurred. You may not even know its there but it is. Then we hear the idea again, a week or a month later and the connection gets a little stronger – it still may not be strong enough for you to recall the idea. But you might at least have recognition the next time you hear it as in, “Oh, yes, I do remember now that you mention that.”

I had that experience about three years ago when I was at a meeting where Bill Ives was speaking about Web 2.0. Now Bill is a guru of social media, so even back then he was talking about the value of blogs, wikis and rss feeds. I liked what he said and was intrigued about the idea of Web 2.0 – but by the time the meeting, and several other speakers, was over, my thinking about blogs was over as well. The idea was potentiated but not strong enough for me to give it much thought in the subsequent weeks and months.

But probably like you, over the next three years I kept hearing about blogs, in articles and presentations. Last month Dave Snowden and I were both speaking at KM Asia and Dave talked about blogs and the value they bring to his own learning and the idea went LTP! And I started blogging. Now, I don’t think it’s that Dave is a more convincing speaker than Bill, to the contrary, if I hadn’t heard Bill’s speech three years ago I don’t think Dave’s speech would have been able to trigger me to start writing a blog.

There are a number of implications that come to mind for me, two that explain some of difficulties people face, and several that have more positive aspects. The negative ones first-

• LTP explains how people can get an idea so firmly fixed in their minds – a connection that has long term potentiation - that it seems that no amount of new evidence will impact their thinking. For example, someone who bought a Toyota in 1975, that turned out to be a lemon, and will never buy another Toyota no mater what consumer reports says about its reliability in 2009.




• LTP also explains Post Traumatic Stress Syndrome, when even the smallest reminder of a traumatic stress will trigger it again – so sensitized is the connection between those neurons.

But on the more positive side:

• Learning theorists know about potentiation – they call it “foreshadowing.” They advise teachers to introduce a concept before it comes up in the curriculum or lecture. Foreshadowing prepares the mind of the listener or the reader for an idea to come. In the vernacular it’s the familiar, “Tell ‘em what your going to tell ‘em; tell ‘em; then tell ‘em what you told ‘em. Not a bad way to strengthen potentiation any time we are introducing a new idea.




• I explain to a colleague just why it’s imperative that he support the redesign of the development process and I can tell he’s listening but I can also tell he isn’t getting it. I could walk away from that exchange thinking that he is just not a forward thinking individual, or any of a hundred other attributions we make about those that don’t immediately take to our ideas. Or I can assume, “it is early days;” I can say to myself, “He doesn’t get it yet but I have started the potentiation process.




• There is a great story about Rosa Parks that illustrates potentiation for all of us who facilitate workshops. Rosa Parks attended a workshop on school desegregation at Highlander in 1955. At the end of the workshop the Highlander staff asked, as we often do at the end of a workshop, "What are you going to do when you go back?" Many of the participants said, probably not much because they didn’t think the black community would stick together to fight segregation. Rosa’s response was, "Montgomery is the cradle of the confederacy. The white people won't let black people do anything." And she echoed the sentiment of the others, "Even if they did, I don't know whether we'd stick together or not." Then a few weeks later in Montgomery Rosa Parks refused to give up her seat on the bus to a white man, triggering the Montgomery boycott that drew national attention to the civil-rights movement. At the end of their workshop the facilitators at Highlander must have felt a disappointment at the response to their question. Apparently they had changed few, if any, minds. Yet, there was potentiation occurring in that room. You wonder how many times those synaptic connections had to be strengthened for the Montgomery bus boycott to occur.

David Bohm, the great physicist and one of my heroes said, “When you listen to somebody else, whether you like it or not, what they say becomes part of you.”

Trust Versus Psychological Safety

We’re all aware of how heavily our KM work depends on trust. Amy Edmondson takes a deeper look at trust related to knowledge sharing. I always find her work insightful. This week I was re-reading her article “Psychological Safety and Learning Behavior in Work Teams”, probably for the sixth or seventh time, and was struck again about how valuable it is to go beyond our simple understanding of trust and to think about the issue as psychological safety.

Perhaps I should start with what she means by psychological safety, it is “a shared belief that the team is safe for interpersonal risk taking.” But that, of course, begs the question, because then we have to ask what exactly does “interpersonal risk taking” mean. Edmondson explains it is “a sense of confidence that others will not embarrass, reject or punish someone for speaking up.”

So Psychological Safety seems to go far beyond interpersonal trust to include, 1) respect for each other’s competence, 2) caring about each other as people and 3) trust in each other’s intentions.

It’s a group, rather an individual concept, thus a shared sense that is developed out of a shared experience. As an example of a shared experience, she explains that group members, “will conclude that making a mistake does not lead to rejection when they have had a team experience in which appreciation and interest are expressed in response to discussion of their own and others’ mistakes.” Such shared experiences, occurring over time, create the tacit belief that that the team is a psychologically safe place.

In fact, Edmondson says it does little to increase psychological trust for managers or team members to talk about the need for it or to urge others to trust, because it is the experience that teaches. I’m certain that’s true for me personally. Although I’ve been in countless situations where the leader has said something akin to, “I want this to be a place where everyone can speak their mind,” as far as I can remember, hearing that has never made me one wit more open or forthcoming. In those situations what I needed to know was how others in the room were going to regard what I had to say. Would they see me as “out of touch?” “outlandish?” “showing off?” “smart?” “interesting?” If I conclude from their response to a comment I make, that their view of me is more the latter, I’m more willing to share my thinking, even when it isn’t fully formed. But the clues I use to make that decision are subtle; a widening of the eyes, a follow-up inquiry to what I’ve said, nods of agreement, and probably many other clues I pick up on but couldn’t name. From my own experience, I can affirm, what Edmondson suggests, that a sense of psychological safety is tacit.

The central idea of her study was to see if there is a relationship between psychological safety and team learning. To find that out Edmondson studied 51 real work teams in a manufacturing company, some of which were product development teams and others project teams, some self-managed, and others leader-lead. Edmondson conducted extensive interviews with team members, observed them, and collected survey responses from them.

The major finding from the study was that, 1) if the group/team feels psychologically safe they will, 2) be more willing to ask for help, admit an error, seek feedback, etc. and those actions, 3) produce learning in the group which, 4) improves their performance. Written as a simple formula:

We Learn (When We Listen) When We Talk

The title is a bit of an exaggeration, but intended to make the point that contrary to common belief, our own articulation of an idea adds to our understanding of that idea. At face value that doesn’t make much sense, after all we must know what we think about an issue; how else are we able to talk about it? But the reality is that what we don’t necessarily know what we know. Has it happened to you that, as you begin to describe to another person a complex issue you want to ask them about, the answer pops into your mind before you finish the question? And you end up saying, somewhat sheepishly, “Nevermind, I think I’ve just realized what the answer is.” In trying to explain the situation, your mind has put the bits and pieces you know about the topic together in a new way and provided a new understanding.

Johnson and Johnson, researchers at the University of Michigan, who have conducted studies of conversations, explain it this way. “In these meetings individuals exchange their data, conclusions, reasoning and questions with others. Although the cognitive benefits to the receiver of such an exchange are apparent, there is evidence that it is the speaker who makes the greatest cognitive gains from the exchange. Individuals organize information differently if they are going to present it to others than if they are trying to understand it solely for their own use. It is in the act of speaking that people tend to organize cognitively what they know.” They learned when they talked!

This interesting phenomenon has a number of possible knowledge management implications for me:


It implies that if I am stating an argument to convince someone else of the reasonableness of my position, I would be wise to pause periodically to give the other person an opportunity to articulate his or her thinking on what I’ve said. Even if the other’s response is only to offer a counter argument, that person will learn something new about their own position by “the way they have organized information differently…. to present it.” 


It implies that if I deliver a presentation or a lecture it would be helpful to make time for those listening to have a conversation with each other – a way for them to make mental connections that otherwise might never be made. (This is a part of the rationale behind my rant on “Are There Any Questions”) 


It implies that if I want another team to learn from the lessons my team or project has garnered, the transfer would work better if I arrange a conversation between the two groups than as a document. The conversation would provide the opportunity for the recipient to think out loud about how the lessons relate to their own work. 



It implies that I read an great article I will incorporate the ideas more fully into my own cognitive map, if I tell a colleague what I have just read (or write a blog about it). 



It implies that in the debrief of that great project my team just accomplished, the team is more likely to be able to understand how they achieved that success, if I gather the group to talk to about what they learned. They will learn what they learned in the talking. 



What a wonderful phenomenon - we learn when we talk. It has all kinds of uses

Learning in Public

A wonderful thing has been happening in organizations about learning - the idea of learning is shifting from the tradition of “learning in private” to “learning in pubic”. Learning in private was what we all did in school; remember “don’t look at your neighbor’s paper, write your own essay, and no whispering during test taking.” Learning was seen as an individual pursuit, and that attitude carried over to how we thought about learning in the workplace. When employees are rewarded for their expertise there is some need to keep private those things that they do not know.

However that traditional idea is giving way to “learning in public.” In part, we can credit Web 2.0 and the general increase in transparency that it has engendered through social media like Facebook, Linkedin and Twitter.

But learning in public is also coming about because of the work KM professionals have done in organizations. As KM professionals we have enabled transparency by implementing knowledge sharing processes like peer assist, collaborative workspaces, communities of practice, blogs and wikis. These have made it acceptable to say, “I don’t know” about an issue or problem and to ask others for help. When professionals acknowledge not knowing and reach out to a colleague, it not only opens the requester to learning, it signals to others that they can acknowledge that there are things they don’t know - it begins to change the culture. We see a willingness to “learn in public” among professionals, be they scientists, engineers, analysts, or physicians. We see teams and projects learning in public through AARS and Retrospects. We see whole systems learning in public through practices like appreciative inquiry, knowledge cafes and a host of other whole system processes.

We are also learning in pubic when we engage in in-depth conversation. Elsewhere I’ve defined conversation as: when each person is actively working to understand the meaning the other is trying to convey. To understand another’s meaning often requires us to ask questions about the other’s reasoning, ask for examples, and paraphrase what was said to check if we now “have it.” All of which takes time. So part of learning in public through conversation is a group’s willingness to make a time commitment in the interest of learning and understanding. That’s a change for many groups where the norm has been - when hearing an idea from a colleague, but not quite clear about what he/she is trying to say, just let it go and move on to the next statement. Increasingly I see a willingness to engage in the in-depth exchange that is necessary if we are to create new knowledge together. Conversation is a “learning in public” tool – maybe one of the best.