- Introduction: What Makes the Best Teams Different
- Google Project Aristotle and the Discovery of Psychological Safety
- The Four Stages of Psychological Safety (Timothy Clark's Model)
- Measuring Psychological Safety: Amy Edmondson's Seven Survey Items
- Comparison Table: Behavior Patterns in High- vs Low-Safety Teams
- Constructive vs Destructive Conflict
- Conflict Resolution Frameworks
- Building a Feedback Culture
- Building Psychological Safety on Remote Teams
- Ten Concrete Actions a Leader Can Take
- Failure Cases: The Danger of "Artificial Harmony" and "Agreement Without Commitment"
- Integrating the Frameworks: A Guide to Choosing the Right Tool
- Checklist: Action Items for Strengthening Team Psychological Safety
- Psychological Safety and Performance: The Research Evidence
- Closing: Psychological Safety Is a Journey, Not a Destination
- References

Introduction: What Makes the Best Teams Different
In 2012, Google launched an internal research project called "Project Aristotle." The goal was to analyze more than 180 teams and identify the traits that high-performing teams share. The researchers initially expected that individual capability -- education, experience, personality, technical level -- would be the key.
The result was not what they expected. The most important factor determining team performance was not who was on the team but how the team worked together. And of the five key factors in team effectiveness, the most important was psychological safety.
Amy Edmondson defines psychological safety this way in "The Fearless Organization."
"Psychological safety is a shared belief held by members of a team that the team is safe for interpersonal risk-taking. It is the confidence that no one will be penalized for asking a question, admitting a mistake, or proposing an idea."
This article covers the theoretical foundation of psychological safety, how to measure it, how to manage constructive conflict, how to build a feedback culture, and how to practice all of this in a remote setting -- in short, how to fundamentally improve communication in an engineering team.
Google Project Aristotle and the Discovery of Psychological Safety
The Five Key Factors from Project Aristotle
According to Google re:Work's "Guide: Understand team effectiveness," the five factors that determine team effectiveness are, in order of importance, as follows.
- Psychological Safety: do people feel it is safe to take risks?
- Dependability: do teammates get their committed work done on time?
- Structure and Clarity: are roles, goals, and execution plans clear?
- Meaning: is the work itself personally meaningful?
- Impact: do people feel the team's work is making a real difference?
What is interesting is that psychological safety turns out to be the foundation for the other four. Without psychological safety, teammates do not raise problems (dependability drops), do not ask about role ambiguity (structure suffers), and do not attempt meaningful challenges (meaning and impact both decline).
Why Psychological Safety Matters Especially for Engineering Teams
Engineering teams are affected by psychological safety more strongly than teams in general.
Technical complexity: in a complex system, no single person can understand everything. Only if you can say "I'm not sure about this" can you get help from an expert.
Rapid change: the technology landscape shifts quickly. While learning something new, you have to be able to ask "beginner" questions.
Incident response: fast communication is essential during a production incident. Hiding a mistake lengthens recovery time and spreads the damage.
Innovation: new ideas are almost always incomplete at first. Innovation is possible only if incomplete ideas can be proposed safely.
Code review: for honest feedback to flow in code review, people need to trust that the feedback is about improving the code rather than attacking the person.
The Four Stages of Psychological Safety (Timothy Clark's Model)
In "The 4 Stages of Psychological Safety," Timothy R. Clark explains that psychological safety develops through four stages. Each stage builds on the one before it, and they must be established in order.
Stage 1: Inclusion Safety
Definition: the sense that "I belong to this team, and I am accepted as I am."
What it looks like on an engineering team
- New teammates feel welcomed from day one
- People are treated as equal members regardless of background, seniority, or specialty
- Nobody is sidelined in team meetings or decision-making
Symptoms when it is missing
- New teammates feel like "outsiders" for a long time
- People are excluded from conversations and in-jokes belonging to one subgroup
- Decisions are made in informal channels and only some people find out
How to build it
- Onboarding buddy system: assign one existing teammate as a buddy to every new hire
- Document team norms: write down meeting times, communication channels, and decision-making methods to eliminate unwritten rules
- Regular one-on-ones: managers hold a 30-minute one-on-one with each teammate once a week
Stage 2: Learner Safety
Definition: the sense that "I can ask about what I don't know, and it's fine to make mistakes."
What it looks like on an engineering team
- Even senior engineers say "I'm not really sure about this part" without hesitation
- Beginner questions are welcome in code review
- Sharing a mistake is treated as a learning opportunity rather than something shameful
Symptoms when it is missing
- People fear the reaction "you don't even know that?" if they ask
- People pretend to understand and move on when they do not
- Mistakes get hidden, and defensiveness follows when they are discovered
How to build it
- "Dumb question time": reserve five minutes at the end of every meeting where any question is allowed
- Vulnerability modeling by leaders: the leader shares "I'm not sure about this part either" first
- Failure-sharing sessions: run a monthly "my mistake this month" session
Stage 3: Contributor Safety
Definition: the sense that "my contribution is valued and I can make a meaningful difference."
What it looks like on an engineering team
- Contributions are recognized concretely
- The opinions of the people involved are reflected in decisions
- Even juniors can weigh in on architecture decisions
Symptoms when it is missing
- A sense of helplessness: "my opinion won't be taken into account anyway"
- Contributions are ignored, or the credit goes to someone else
- Decisions are made unilaterally by a small group
How to build it
- RFC (Request for Comments) process: document important technical decisions and gather input from every teammate
- Public recognition: mention a teammate's contribution specifically in Slack and express thanks
- Decision transparency: share the reasoning behind decisions and the alternatives that were weighed
Stage 4: Challenger Safety
Definition: the sense that "it is safe to question the status quo and propose a better way."
What it looks like on an engineering team
- The question "is this approach really the best one?" comes up naturally
- Anyone can raise technical debt, process inefficiency, or architectural problems
- People can constructively disagree even with a superior's decision
Symptoms when it is missing
- Resignation: "saying something won't change anything"
- People know about an obvious problem, but nobody points it out
- People self-censor technical opinions for "political" reasons
How to build it
- A "devil's advocate" role: assign one person in a meeting to deliberately argue the opposing case
- Anonymous feedback channel: run a channel where opinions can be submitted without pressure
- ADRs (Architecture Decision Records): document architecture decisions so they can be reviewed transparently
Summary Comparison of the Four Stages
| Stage | Core feeling | What the teammate needs | The leader's role |
|---|---|---|---|
| Inclusion Safety | Belonging | "I am accepted" | Welcome, inclusion, equal treatment |
| Learner Safety | Safety to learn | "It's okay to be wrong" | Modeling vulnerability, inviting questions |
| Contributor Safety | Recognition | "My opinion matters" | Recognition, chances to participate, transparency |
| Challenger Safety | Safety to dissent | "I can push back" | Welcoming dissent, humility |
Measuring Psychological Safety: Amy Edmondson's Seven Survey Items
Psychological safety is not an abstract idea; it is a measurable property of a team. The seven survey items Amy Edmondson developed are the most widely used measurement instrument in the world.
The Seven Survey Items
Each item is rated from 1 (strongly disagree) to 7 (strongly agree). Reverse-coded items are inverted before scoring.
| No. | Item | Direction |
|---|---|---|
| 1 | "If you make a mistake on this team, it is often held against you" | Reverse-coded (lower is safer) |
| 2 | "Members of this team are able to bring up problems and tough issues" | Forward-coded (higher is safer) |
| 3 | "People on this team sometimes reject others for being different" | Reverse-coded |
| 4 | "It is safe to take a risk on this team" | Forward-coded |
| 5 | "It is difficult to ask other members of this team for help" | Reverse-coded |
| 6 | "No one on this team would deliberately act in a way that undermines my efforts" | Forward-coded |
| 7 | "Working with members of this team, my unique skills and talents are valued and utilized" | Forward-coded |
Cautions When Measuring
Guarantee anonymity: the survey must be run anonymously. Without anonymity you cannot expect honest answers from a team whose psychological safety is low in the first place.
Analyze at the team level: psychological safety is a property of the team, not the individual. Analyze the team average and distribution rather than individual scores.
Measure regularly: measure quarterly and track the trend. A one-off measurement has limited meaning.
Connect it to action: share the results and discuss concrete improvement actions together. Measuring and then doing nothing actually increases distrust.
Comparison Table: Behavior Patterns in High- vs Low-Safety Teams
| Situation | Team with high psychological safety | Team with low psychological safety |
|---|---|---|
| Finding a problem in code review | "This part could have this issue. What if we changed it this way?" | (Knows about it, but LGTMs to avoid conflict) |
| Something unclear in a meeting | "Sorry, could you explain that part again?" | (Doesn't understand, pretends to, moves on) |
| When an incident happens | "I deployed the wrong configuration by mistake" (reported immediately) | (Hides their own mistake and looks for another cause) |
| Proposing a new technology | "I think this technology fits -- let me build a PoC" | (Stays silent, fearing a bad review if the proposal fails) |
| Under schedule pressure | "This timeline isn't realistic. We need to adjust scope" | (Agrees to an impossible timeline and tries to make it with overtime) |
| Disagreeing with the leader | "I think we could consider another approach too" | (The leader already decided, so following along is safer) |
| A failed project | "Let's discuss what we learned and how to do it better next time" | Focused on establishing "whose fault it was" |
| On-call escalation | "This is beyond me. I'm escalating to a senior" | (Tries to solve it alone and the incident grows) |
| Signs of burnout | "Things have been hard lately. I need my workload adjusted" | (Endures it, fearing that speaking up looks weak) |
Constructive vs Destructive Conflict
The Duality of Conflict
In "The Five Dysfunctions of a Team," Patrick Lencioni names "fear of conflict" as the second layer of team dysfunction. On a healthy team, it is not that there is no conflict -- it is that conflict gets resolved constructively.
A team that avoids conflict entirely falls into a state of "artificial harmony." On the surface it is peaceful, but the core problems go unaddressed, the best ideas are not adopted, and teammates quietly accumulate resentment.
Distinguishing Constructive from Destructive Conflict
| Aspect | Constructive conflict | Destructive conflict |
|---|---|---|
| Focus | Ideas, approaches | Someone's personality or ability |
| Purpose | A better decision | Winning, diminishing the other person |
| Tone | Curiosity, respect | Aggressive, defensive |
| Outcome | Agreement or a better alternative | Damaged relationships, a divided team |
| Data | Grounded in evidence and data | Grounded in emotion and personal experience |
| Language | "The pros and cons of this approach are..." | "That's wrong" / "You always do this" |
| Attitude | Effort to understand the other view | Holding one's own position |
| Relationship after | The relationship survives the conflict | Emotional residue lingers |
Managing Conflict in Technical Decisions
The most frequent conflicts on engineering teams arise from technical decisions. Opinions split on questions like "which language should we use," "monolith or microservices," and "should we adopt this library."
The RFC (Request for Comments) process
An RFC is an effective tool for giving structure to conflict over technical decisions.
- The proposer writes an RFC document: problem definition, proposed solution, alternatives considered, analysis of pros and cons
- Asynchronous review period: teammates comment on the document to give their input (typically 3-5 days)
- Synchronous discussion: if needed, discuss the central points of contention in a meeting
- Decision and record: the decision-maker decides and records the reasoning
The core value of an RFC is that people can think it through asynchronously before offering an opinion. It permits deeper analysis than improvised discussion in a meeting, and introverted teammates can participate on equal terms.
ADRs (Architecture Decision Records)
An ADR is a format for recording architecture decisions systematically.
# ADR-001: Title
## Status
Proposed / Accepted / Deprecated / Superseded
## Context
The background and circumstances that make this decision necessary
## Decision
The option adopted and the reasoning behind it
## Alternatives Considered
The alternatives that were reviewed but not adopted, and why
## Consequences
The positive and negative effects expected from this decision
By recording "why we decided this way," ADRs prevent the same argument from being relitigated later. They are also useful for helping a new teammate understand the context of past decisions.
Conflict Resolution Frameworks
The Four Steps of Nonviolent Communication (NVC)
Nonviolent communication (NVC), developed by Marshall Rosenberg, is a basic framework for resolving conflict. It has four steps.
Step 1: Observation
- State objective facts only, without judgment or interpretation
- Bad: "You're always late with code reviews"
- Good: "Over the last three weeks, reviews of my PRs happened on average four days later"
Step 2: Feeling
- Express the emotion you feel in that situation
- Bad: "I feel ignored" (interprets the other person's intent)
- Good: "I feel frustrated and anxious"
Step 3: Need
- Make clear the unmet need underneath that emotion
- Bad: "Please review faster" (jumps straight to a concrete demand)
- Good: "I want to keep the pace of my work predictable"
Step 4: Request
- Offer a concrete, actionable request
- Bad: "Please be faster from now on"
- Good: "Would you be able to leave a first comment within 24 hours of a PR going up?"
A full conversation using NVC
"Over the last three weeks, reviews of my PRs happened on average four days later (observation). That leaves me frustrated and my workflow keeps breaking (feeling). I need to be able to predict the pace of my work in order to plan other tasks (need). Would you be able to leave a first comment within 24 hours of a PR going up? And if review time is genuinely tight, I'd like us to find another way together (request)."
The DESC Model
DESC is a four-step model for structuring a difficult conversation.
| Step | Description | Example |
|---|---|---|
| Describe | Describe the situation objectively | "In today's meeting, I was interrupted three times while presenting" |
| Express | Express the resulting feeling or impact | "It broke the flow of my presentation and I couldn't pull my thoughts together" |
| Specify | Propose the behavior you want, concretely | "Next time, I'd appreciate it if questions came after the presentation" |
| Consequence | Present the positive outcome | "Then I can deliver the content more clearly and answer questions in more depth" |
The Interest-Based Relational Approach (IBR)
IBR is an approach that, in resolving conflict, focuses on interests rather than positions.
Distinguishing positions from interests
| Situation | Position | Interest |
|---|---|---|
| Technology choice | "We have to use React" | "Fast development, a rich ecosystem, easier hiring" |
| Deployment approach | "We should deploy only once a week" | "Securing stability, minimizing incident risk" |
| Schedule | "We need two more weeks" | "Guaranteeing quality, preventing technical debt" |
Talking at the level of interests raises the odds of finding a new option that satisfies both sides' needs. For example, when "weekly deploys" (a position) collides with "daily deploys" (a position), a new solution such as "canary deploys plus automatic rollback" can emerge that satisfies both "stability" (an interest) and "speed" (an interest).
Steps for applying IBR
- Explore interests first -- why each side holds its position -- rather than the positions themselves
- Find the shared interests (most conflicts have some)
- Brainstorm options that satisfy both sides' interests
- Evaluate the options against objective criteria (data, benchmarks, precedents)
- Agree, and record the reasoning behind the decision
Building a Feedback Culture
Using the Radical Candor Matrix
Kim Scott's "Radical Candor" defines four communication types along two axes of feedback.
The two axes
- Care Personally: do you genuinely care about the other person as a human being?
- Challenge Directly: do you point out the problem directly?
| Challenge Directly (high) | Challenge Directly (low) | |
|---|---|---|
| Care Personally (high) | Radical Candor | Ruinous Empathy |
| Care Personally (low) | Obnoxious Aggression | Manipulative Insincerity |
Each type in detail
Radical Candor - the target state
- The optimal feedback, combining care and directness
- Example: "The requirements analysis in this design doc is well done. The failure-scenario section is thin, though, and shoring it up would make the whole thing much more solid. Shall we look at it together?"
Ruinous Empathy - the most common mistake
- Failing to name the problem out of concern for the other person's feelings
- Example: (the design doc has a serious flaw) "Looks good, nice work!"
- Risk: the problem is left alone and costs far more later
Obnoxious Aggression
- Naming the problem directly with no care for the person
- Example: "Does this design even make sense? The basics aren't there"
- Risk: destroyed relationships, seriously damaged psychological safety
Manipulative Insincerity
- The worst type: neither care nor directness
- Example: saying nothing to someone's face, then complaining about them to others afterward
- Risk: trust destroyed entirely, team culture turned toxic
SBI (Situation-Behavior-Impact) Feedback
SBI is a structured feedback framework developed at the Center for Creative Leadership.
Structure
| Element | Description | Example |
|---|---|---|
| Situation | The specific time and place of the situation | "In yesterday's sprint review meeting" |
| Behavior | The specific observed behavior (fact, not interpretation) | "You immediately offered three technical alternatives in response to the customer's feedback" |
| Impact | The effect that behavior had on you, the team, or the project | "Because of that the customer came to trust our team's expertise, and it led naturally into a discussion of additional features" |
Positive feedback example (SBI) "In today's incident response (S), you identified the cause within five minutes and shared it with the team (B). Thanks to that, total recovery time was cut substantially and the rest of us, myself included, could focus on our own roles (I)."
Improvement feedback example (SBI) "On three PRs this week (S), you requested a merge without test code (B), which makes it hard for reviewers to judge the impact of the change and is stretching out review time (I)."
Feedback Frequency and Timing
| Feedback type | Recommended frequency | Timing | Format |
|---|---|---|---|
| Immediate recognition | As it happens | Right after the behavior | Slack, in person |
| Improvement feedback | As it happens | Within 24 hours of the behavior | One-on-one, DM |
| One-on-one feedback | Weekly | The regular one-on-one | In person or video |
| 360-degree feedback | Quarterly | End of quarter | Survey |
| Performance feedback | Twice a year | Every half-year | Formal review |
Building Psychological Safety on Remote Teams
Building psychological safety is harder in a remote working environment than in person. Non-verbal cues are hard to read, casual conversation drops away, and isolation increases.
Challenges Specific to Remote Work
| Challenge | Description | Impact |
|---|---|---|
| Absent non-verbal cues | Communication through expression and gesture is limited | More misunderstanding, harder to read emotion |
| Less spontaneous conversation | No informal exchanges in hallways or by the coffee machine | Fewer chances to build relationships |
| Time zone differences | A larger share of communication is asynchronous | Greater chance of misreading tone and intent |
| Uneven visibility | Only the people who communicate actively have "presence" | Quiet teammates get sidelined |
| Blurred boundaries | Work and life are hard to separate | Higher burnout risk |
Practical Strategies for Remote Teams
1. Deliberate check-ins
- A short daily status share in Slack each morning (mood, plan for the day, where help is needed)
- A weekly "non-work conversation" slot: 15 minutes on topics outside of work
2. Camera policy
- Do not mandate cameras, but share gently the expectation that "it's nice when cameras are on"
- Make explicit that turning the camera off is not a refusal to participate
3. Guidelines for written communication
- Text does not carry tone, so apply the principle "when in doubt, read it charitably"
- Encourage emoji to supply the emotional register that text lacks
- Deliver sensitive feedback on a video call, not in text
4. Running inclusive meetings
- Share the agenda and materials before the meeting to allow preparation time (considerate to non-native speakers and introverts)
- Round robin: give every attendee a turn to speak, in order
- Use chat: tell people they can also contribute via chat during a video meeting
5. An async-first culture
- Run important decisions on documents so people can participate regardless of time zone
- Lower the expectation of "immediate response" and state response-time expectations explicitly (for example, Slack within four hours)
Ten Concrete Actions a Leader Can Take
Drawing together Amy Edmondson's research and Google re:Work's recommendations, here are ten concrete actions a team leader can practice to build psychological safety.
1. Show vulnerability first
Share your own mistakes, the things you do not know, and your uncertainties first. Under a leader who says honestly "I'm not sure about this part either" or "I made this mistake last week," teammates become honest too.
2. Encourage questions
React with "good question" -- but not as a formality. Explain specifically why it was a good question, as in "thanks to that question I noticed something I had overlooked."
3. Frame failure as learning
After an incident or a failure, start the conversation with "what did we learn" rather than "whose fault was it." This connects directly to a blameless postmortem culture.
4. Listen actively
Do not interrupt while a teammate is speaking; after they finish, summarize what they said to confirm it. "What I understood is this -- is that right?"
5. Ask for opinions (especially from quiet teammates)
Ask teammates who have not spoken up in a meeting directly: "what do you think?" But do not force it. Offer an out as well: "it's fine for now, you can send me your thoughts on Slack later."
6. Do not fear conflict
When technical opinions clash, do not mediate -- turn it into a constructive debate. "You both have good perspectives. Shall we lay out the pros and cons of each?"
7. Stay consistent
Psychological safety cannot form under a leader whose reactions depend on their mood. React with a consistent demeanor whether the news is good or bad.
8. Recognize people publicly
Recognize teammates' contributions specifically and publicly. Not "you reviewed that thoroughly," but "catching the database index problem in this PR review is what let us prevent a performance issue up front."
9. Respect boundaries
Do not treat overtime or weekend work as a given. When a teammate says "I have to leave early today," do not ask why. Respecting the boundary between work and life is part of safety too.
10. Ask for feedback
Actively ask for feedback about yourself. "If there is something I could improve in how I lead the team, tell me." And respond to the feedback you receive with an actual change in behavior.
Failure Cases: The Danger of "Artificial Harmony" and "Agreement Without Commitment"
Case 1: "Our team has no conflict"
The leader of team A is proud of the team's atmosphere: "our team has no conflict and always gets along." Look closer, though, and the picture is this.
- Technical decisions are made by the leader alone, and teammates only answer "sure"
- There is almost no meaningful feedback in code review; everything is approved with LGTM
- Someone knows about an architectural problem, but does not raise it "because the leader decided it"
- As a result technical debt accumulates and incidents become frequent
Diagnosis: in Lencioni's framework this is "fear of conflict," and its cause is the absence of psychological safety -- Challenger Safety in particular.
Lesson: a team without conflict may not be a healthy team. A team lacking constructive conflict is peaceful on the surface, but inwardly learning and innovation have stopped.
Case 2: "The team where honest feedback became violence"
Team B holds up "honest communication" as its culture. In practice, though, this is what happens.
- Remarks that attack individuals are permitted in the name of "honesty"
- Expressions like "you don't even know that?" and "the basics aren't there" get used
- Directness without care becomes the team culture
- As a result juniors and members of minority groups stop speaking, and attrition rises
Diagnosis: in the Radical Candor matrix this is "Obnoxious Aggression." Challenge Directly is high, but Care Personally is missing.
Lesson: honesty has value only alongside care. Attacking someone under the banner of "honesty" is not feedback; it is violence.
Case 3: "A decision everyone agrees with"
Team C pursues "unanimous agreement" on important technical decisions. The reality is this.
- The opinion of whoever is loudest gets adopted as the "consensus"
- People who disagree say "I agree" because the mood pushes them there
- After the decision the discontent erupts behind the scenes and resistance appears during execution
- As a result decisions get delayed or reversed
Diagnosis: this is "agreement without commitment." It is surface-level assent rather than genuine agreement, and in Lencioni's framework it leads to "lack of commitment."
Lesson: pursue agreement, but explicitly allow the option of "disagree and commit." Not every decision requires unanimous agreement. Discussing thoroughly, then having the decision-maker decide while the rest back the decision, is the healthier approach.
Integrating the Frameworks: A Guide to Choosing the Right Tool
It matters that you choose the communication framework that fits the situation.
| Situation | Recommended framework | Why |
|---|---|---|
| Clashing technical opinions | RFC + IBR | Asynchronous analysis plus interest-centered discussion |
| Behavior-change feedback | SBI | A concrete, objective feedback structure |
| Emotional conflict | NVC | Expressing emotions and needs safely |
| Opening a difficult conversation | DESC | A stepwise, structured approach |
| Everyday praise | SBI (positive version) | Reinforces behavior through specific recognition |
| Architecture decisions | ADR + RFC | Records the decision process and reasoning systematically |
| Feedback to a leader | NVC + DESC | Direct communication while maintaining respect |
| Team retrospectives | IBR + NVC | Reviews the past without blame, agrees on the future |
Checklist: Action Items for Strengthening Team Psychological Safety
Doable immediately (this week)
- Have the leader share one recent mistake of their own at the next team meeting
- Replace "any other opinions?" at the end of a meeting with "is there something we're overlooking in this decision?"
- Write at least one Slack message recognizing a teammate's contribution specifically
- Explain the "why" alongside every code review comment you write
- Ask at your next one-on-one: "is there something I could improve in how I lead the team?"
Short term (this month)
- Measure team psychological safety with Amy Edmondson's seven survey items
- Draft a team communication norms document (response-time expectations, feedback methods, conflict resolution)
- Pilot the RFC process: write an RFC document for the next technical decision
- Feedback practice session: role-play feedback using the SBI framework (30 minutes)
- Run one "my mistake this month" sharing session
Medium term (this quarter)
- Run the psychological safety survey a second time to check the trend
- Adopt ADRs: document the major technical decisions of the last three months as ADRs
- Remote teams: establish and share asynchronous communication guidelines
- Invite an outside coach or facilitator to run a communication workshop (once)
- Start measuring feedback frequency metrics (number of one-on-ones, code review comment counts, and so on)
Long term (within six months)
- Extend psychological safety measurement across the whole organization
- Introduce a communication skills training program for managers
- Include communication quality as a regular agenda item in team retrospectives
- Include team communication norms in new-hire onboarding
- Include psychological safety indicators in the annual team health report
Psychological Safety and Performance: The Research Evidence
Beyond the intuition that psychological safety is "a good thing," actual research data backs it up.
| Study / source | Key finding |
|---|---|
| Google Project Aristotle (re:Work) | Psychological safety is the strongest predictor of team effectiveness |
| Edmondson (1999), the original paper | Teams with higher psychological safety report errors more often, which in turn drives learning and improvement |
| Forsgren et al., "Accelerate" | Organizations with higher psychological safety perform better on key metrics such as deployment frequency, recovery time, and change failure rate |
| Clark (2020) | Teams with high Challenger Safety are significantly better on innovation output |
| Gallup (2017) | Members of teams with high psychological safety are 27% less likely to intend to leave |
Closing: Psychological Safety Is a Journey, Not a Destination
Psychological safety is not something you build once and keep forever. As teammates change, as projects change, as the organization changes, psychological safety has to be rebuilt continually.
Amy Edmondson puts it this way.
"Psychological safety is not about being nice or lowering standards. On the contrary, it produces the best performance when it is paired with high standards. Psychological safety is not comfortable silence; it is the courage to speak an uncomfortable truth."
High psychological safety does not mean "everyone is comfortable." It means uncomfortable conversations can be had safely. A team where technical debate is lively, mistakes are shared, and dissent is welcome -- that is the team that produces the best results in the face of complex technical challenges.
Pick one smallest possible action you can start today. Sharing one of your own mistakes honestly, recognizing a teammate's contribution specifically, or throwing out one sentence that welcomes a dissenting view. Small actions accumulate into a culture.
References
- Amy Edmondson, The Fearless Organization: the core book, systematically laying out the theoretical foundation of psychological safety and how to practice it inside an organization
- Google re:Work, Guide: Understand team effectiveness: https://rework.withgoogle.com/guides/understanding-team-effectiveness/
- Timothy R. Clark, The 4 Stages of Psychological Safety: the four-stage model of psychological safety and how to build each stage
- Patrick Lencioni, The Five Dysfunctions of a Team: the five layers of team dysfunction and the role of healthy conflict
- Kim Scott, Radical Candor: a feedback framework that realizes care and honesty at the same time
- Marshall Rosenberg, Nonviolent Communication: the four-step framework for empathy-based communication