Episode 90- How Psychological Safety Shapes Team Decision-Making: Samantha Rush

Jane Anderson Decision Making Expert, Speaker, Facilitator, and Consultant, Samantha Rush

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Jane Anderson's Show with Samantha Rush

Most leaders believe they're good at making decisions. The truth is, most of us don't actually know how good we are, because the majority of our decision-making happens unconsciously, on autopilot, without us ever examining it.

That's the starting point for decision-making expert and PhD researcher Samantha Rush, who joined The Jane Anderson Show to unpack why teams so often make worse decisions than the individuals in them, and what psychological safety has to do with it.

Rush isn't a theorist observing from the outside. She spent years working inside big-four consulting environments before building her own advisory practice, and she's now completing a PhD researching when and why teams accept structured decision-making techniques over instinct. Her research has been presented at the Society for Personality and Social Psychology (SPSP) conference, the world's largest organisation of personality and social psychologists.

This article draws on her conversation on the show to explain what psychological safety actually is, why groupthink happens even in rooms full of smart people, and what leaders, and consultants running their own practices, can do about it.

Who Is Samantha Rush?

Rush's path into decision-making research wasn't linear, but it was consistent. She built a career across intelligence and corporate executive roles, and has worked as a company director, business advisor, and strategic consultant across a range of sectors and industries.

Her academic background reinforces that breadth: an MBA, an honours degree in psychology, and a background in industrial relations, alongside the PhD she's currently completing on decision-making. She's also a recognised fellow of several professional associations in her field.

What stands out in her account of building a consulting practice is a fairly simple trigger: dissatisfaction with the quality of work she'd seen delivered by others. Having sat on the client side of big-four consulting engagements, she describes not being impressed by generic, copy-pasted deliverables that didn't match the price paid for them. That gap between what was promised and what was delivered is part of what pushed her toward building her own advisory practice, one built around bespoke, evidence-based work rather than recycled templates.

What Is Psychological Safety?

Psychological safety is the shared belief within a team that it's safe to speak up, to share a dissenting opinion, ask a question, or admit a mistake; without fear of embarrassment or punishment.

The term was coined by Harvard Business School's Amy Edmondson, and Harvard Business Review's own explainer is a useful primer if you want the academic grounding behind it.

It's not the same as being liked, and it's not about avoiding conflict. It's about whether people feel able to contribute their honest perspective, especially when that perspective goes against the room.

Rush frames it as everyone's responsibility, but notes leaders carry a disproportionate share of it. They set the tone for whether disagreement is welcomed or quietly punished.

Why Teams Make Bad Decisions

The Scale of Daily Decision-Making

Rush points out that we make an enormous number of decisions every day: a widely cited (if debated) estimate puts the figure at around 35,000, with a large share of those relating to something as mundane as food. That food-decision figure traces back to Cornell University research showing people underestimate how many food-related choices they make by more than tenfold. Whatever the precise total figure, the underlying point holds up: most of our decisions are made unconsciously, which means most of us have very little visibility into our own decision-making patterns.

That matters because when you scale unconscious, unexamined decision-making from one person up to a team, a division, and then an entire organisation, the risk compounds. Rush describes the organisation itself as often being compared to a brain: full of decisions being made constantly, with very little clarity about who's making them or whether they're the right ones.

Groupthink and the Fear of Standing Out

The biggest single risk Rush identifies in team settings is groupthink, a dynamic where the loudest voices in the room dominate and no one challenges the direction, even when they privately disagree.

She explains the psychology behind it plainly: many people stay quiet not because they lack a view, but because sharing a dissenting opinion feels risky. As Rush put it, it often comes down to not wanting to be "thrown out of the tribe", an instinct rooted in belonging and survival rather than reasoned judgment.

That instinct made sense for most of human history. It's a poor guide for making good business decisions today.

The Cost of a Missing Perspective

This becomes especially dangerous in cross-functional teams. Rush gives the example of a senior leadership or project team that includes people with legal, HR, or other specialist backgrounds. If the person with the critical legal perspective doesn't speak up, because they don't feel safe to, or because the group dynamic discourages it, that missing input can be the difference between a good outcome and a costly mistake.

When Structured Decision-Making Tools Actually Help

This is the core question behind Rush's PhD research: in what contexts are people more likely to accept using a structured decision-making technique instead of relying on instinct?

Her research looks at several variables that appear to influence this, including:

  • The type and consequence of the decision: low-stakes, everyday choices don't need a formal process; high-stakes ones often do

  • The makeup of the team: different personalities and backgrounds respond differently to structure

  • How the team is interacting: face-to-face versus virtual settings appear to change what feels acceptable

  • Psychological safety levels within the group

Structured techniques have already been shown, more broadly, to reduce problems like groupthink and what's sometimes called the common knowledge effect, where teams over-rely on information everyone already shares and under-use the unique expertise individual members bring. What Rush's research adds is a clearer picture of when those techniques are actually welcomed rather than resisted because, as she notes, most people believe they're capable of deciding well on their own, even when the evidence suggests otherwise.

The Layers of Decision-Making in an Organisation

Rush describes decision-making as operating in layers:

  1. Individual: personal biases, instincts, and blind spots

  2. Team: the dynamics that emerge once a handful of people are in a room together

  3. Divisional

  4. Organisational: where all of the above compounds

Each layer inherits the unexamined patterns of the one below it. A leader who never questions their own instinctive decisions will struggle to build a team that does. A team that never surfaces dissenting views will struggle to build an organisation that does.

Applying These Lessons to Your Own Consulting Practice

The conversation didn't stay purely academic. Rush also spoke candidly about applying the same principles: structure, awareness, reduced cognitive load, to running her own advisory practice.

Why Business Development Feels So Hard

Asked what she personally struggles with, Rush didn't hesitate: business development. Not because she dislikes talking to people, but because of a mix of factors: fear of rejection, not wanting to feel "salesy," and, candidly, sometimes just getting bored repeating the same pitch. Her strategy is to keep finding new angles rather than pushing through on willpower alone.

It's a useful reminder that even experts in decision-making and psychology aren't immune to the same avoidance patterns everyone else experiences.

Using Routine to Reduce Decision Fatigue

Rush's practical advice for consultants and thought leaders centres on one idea: remove decisions you don't need to keep making.

She recommends building routine and rhythm into recurring tasks, a newsletter that goes out on the same day every week, for example, so that the when is no longer a daily decision. She also described a simple but effective method: writing down, visibly, the categories of requests or opportunities she's decided to say no to for the year, so that when they come up, there's no fresh decision to make each time.

The logic connects directly back to her research: the fewer decisions you have to consciously make, the more mental capacity you have for the ones that actually matter.

The Case for Delegating Early

Rush credited much of her own capacity to focus on higher-value work to bringing on a dedicated assistant early, within her practice's first year, moving from part-time to full-time support once the value was clear. Having someone who understands how you work, she noted, compounds over time: tasks that once took detailed instructions can eventually be handed off with far less oversight.

This mirrors a broader pattern common among growing consulting and advisory practices: the earlier structural support is introduced, the sooner an owner's time is freed up for the strategic work only they can do. Fellow guest Susanne Le Boutillier made a similar point about outsourcing specific tasks to freelancers based on project needs in her own episode of the show.

Learning From Peers, Not Just Working Alone

Rush also pointed to something less structural and more relational: having a community of peers doing similar work. Being able to raise a challenge with other practice owners rather than letting it circle endlessly in her own head was, in her words, invaluable. It's a reminder that decision-making isn't only an internal or organisational exercise; sometimes the fastest way to a better decision is simply asking someone who's faced the same one before.

Frequently Asked Questions

What is psychological safety in the workplace?

Psychological safety is the shared belief among a team that it's safe to take interpersonal risks: speaking up, disagreeing, or admitting a mistake, without fear of embarrassment or punishment.

Why do teams fall into groupthink?

Groupthink happens when people suppress their own views to avoid standing out or being seen as difficult, often driven by an instinctive fear of social exclusion rather than a genuine belief the group is right.

How many decisions do people make each day?

Estimates commonly cited put the figure around 35,000 per day, though the exact number is debated among researchers. The broader point Rush makes is that most decisions happen unconsciously, which limits our ability to evaluate our own decision-making quality.

When should structured decision-making tools be used instead of instinct?

Based on Rush's research, structured techniques tend to be more useful, and more readily accepted by teams, for higher-stakes decisions, in cross-functional teams, and in contexts where psychological safety may otherwise be low.

How can consultants reduce decision fatigue in their own practice?

Rush recommends building routine around recurring tasks, pre-deciding categories of opportunities to decline, and delegating tasks that don't require the owner's specific expertise.

When should a consultant hire a virtual assistant or EA?

Rush brought on support within her first year in practice, moving to full-time once the value became clear, suggesting that waiting until you're overwhelmed may mean delegating later than necessary.

Conclusion

Samantha Rush's research doesn't argue that instinct is bad or that every decision needs a formal process. It argues something more useful: that the quality of a decision often depends less on how smart the people in the room are, and more on whether the room is structured in a way that lets their best thinking actually surface.

For leaders, that means building psychological safety deliberately rather than assuming it exists. For consultants and thought leaders running their own practices, it means applying the same logic inward; removing the decisions that don't need to be made fresh every day, so there's capacity left for the ones that do.

Work With Jane Anderson

If Samantha Rush's story resonated with you, here are some ways to take the next step:

  • Women With Influence: Join a community of B2B women consultants, coaches, and advisors building world-class practices

  • 1:1 Coaching: Work directly with Jane on your personal brand and business growth strategy

  • Influence Lab: Createa year’s worth of thought leadership content and turn your expertise into strategic assets for your consulting practice.

 

Key Takeaways from Today’s Episode:

 

Full Show Transcript:

 


Most of the guests interviewed are current or alumni members of the Women With Influence community. Click here to find out more

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Episode 91- What Is Attuned Leadership? Dr Michelle Pizer's Framework for Better Leaders

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Episode 89 - Alessandra Edwards: High-Performance & Well-Being Coach, Genetic Strategy Mentor & Author