You're Paying for a Team. Does it Play Like One?

The premise of a team is that it outperforms a collection of individuals doing the same work separately. That premise depends on the people in the team contributing what they actually know - their real assessment of the situation, their genuine concern about the risk, the idea they haven't heard anyone else articulate yet. When that contribution happens, teams make better decisions than any individual member would alone. They surface problems earlier. They generate options that wouldn't emerge from a single perspective. The research on this is specific and the evidence is causal. 

What Teams Are For

Samuel Sommers assigned jury-eligible adults randomly to all-white or racially diverse six-person mock juries and asked them to deliberate on a case. The diverse juries deliberated longer, discussed more facts, and made fewer errors. The effect extended beyond what the minority members contributed - everyone in the diverse group reasoned more carefully. This is a productivity finding. Better decisions, produced faster, with fewer errors, are precisely what organisations pay for when they fund a team rather than an individual. The diverse juries weren't nicer or more harmonious than the homogeneous ones. They were more accurate, and that accuracy is output.

Levine and colleagues tested this in experimental financial markets, assigning participants randomly to ethnically homogeneous or diverse trading groups. Prices in diverse markets fit true asset values 58% better than in homogeneous ones. In homogeneous markets, traders trusted each other's judgments too readily, scrutinised less carefully, and errors compounded. In diverse markets, productive friction produced more accurate collective outcomes. This is a direct output quality finding - the diverse markets produced more accurate pricing, which in any financial context is the measure of productive success.

Exclusion Shuts Teams Down

Christine Porath and Amir Erez ran experiments in which participants were treated disrespectfully before completing tasks. Task performance fell 33%. Creative output fell 39%. A follow-up found that people who merely witnessed disrespect in the room performed 22% to 28% worse - not the target, the bystanders. Disrespect and exclusion consume working memory that would otherwise go into the work. The person is still there. The cognitive capacity that a team needs from them has been redirected. This is why exclusion doesn't just harm the excluded person. It degrades the whole team's output. Every person in a meeting where someone has been dismissed, interrupted or ignored is operating with a portion of their attention on the social dynamics of the room rather than the problem on the table. The team gets a worse version of everyone's thinking.

Clayton Critcher and Melissa Ferguson isolated another mechanism. Their experiments showed that concealing part of your identity during an interaction produces measurable deficits in intellectual acuity and executive function. The cognitive resource spent monitoring what to reveal and what to suppress is the same resource needed for complex reasoning. For people who routinely manage how they present themselves at work - because of their identity, their background, their values, their family situation - this is a chronic drain on the capacity that makes them valuable to a team. Put Sommers, Levine, Porath and Critcher together and the picture is precise. Exclusion converts a potential team into something closer to a collection of individually diminished people, working in parallel, missing the friction that would have made their collective thinking sharper than any of them could manage alone. That is what you're paying for when you assemble a team. Exclusion is what prevents you getting it.

What Inclusion Enables

Amy Edmondson's research on psychological safety identified the enabling condition precisely. When teams believe it's safe to take interpersonal risks - to speak up, challenge, admit mistakes - they engage in the learning behaviour that makes team performance possible. Safety is the condition under which people contribute what they actually know, rather than what they calculate is safe to say.

The productivity case for inclusion follows from this directly. Inclusion creates the conditions under which diverse perspectives can add value - where the person with a different view raises it, gets heard, and changes the collective thinking. When those conditions are present, the Sommers and Levine findings operate at organisational scale: better decisions, more accurate outputs, fewer compounding errors. When those conditions are absent, the diversity is in the headcount and invisible in the output. Hsieh, Hurst, Jones and Klenow's Econometrica study of the US economy between 1960 and 2010 shows what this means at scale. As barriers to women and Black men in the labour market fell, between 20% and 40% of economic output growth per person can be explained by the improved allocation of talent. This productivity finding explained that when conditions changed so that a broader range of people could contribute what they were actually capable of, aggregate output grew measurably. The talent did not change. The conditions that allowed it to be used did. The same mechanism that Sommers found in a jury room and Levine found in a trading market was producing GDP growth across a fifty-year period.

At the organisational level, DCA's Out at Work research found that LGBTIQ+ workers who were fully out at work were 50% more likely to innovate than those who were not. Same people, same roles - a 50% gap in innovation output based on whether they were spending cognitive and social resource on concealment or on the work.

Power, Safety and Productivity

The research points consistently to one enabling condition: psychological safety, which is determined almost entirely by how power is exercised in the room. Whether the most senior person invites challenge or signals that challenge is unwelcome. Whether admitting uncertainty is treated as competence or weakness. Whether the person whose perspective is different from the group's feels the room is safe enough to say so. These are leadership behaviour questions with measurable consequences. Gartner's research found that organisations where line leaders hold high accountability for inclusion show 14% higher employee performance than those where accountability is low. That differential is the team mechanism operating at scale: when leaders create the conditions for genuine contribution, teams produce what teams are supposed to produce.

The practical implication is specific. Look at teams where performance is below expectation and ask whether the issue is capability or conditions. In Sommers' experiment, the homogeneous groups weren't less intelligent than the diverse ones. They were operating under conditions that made them think less carefully. The same dynamic operates in every team where people have calculated that contributing their real view is more costly than withholding it. The team's capability is there. The conditions are preventing it from being used.

Every team in your organisation contains more useful thinking than it is currently producing. Exclusion is the gap between the two. Inclusion is how you close it.

The Bottom Line

The research teaches us that teams are producing a fraction of what the thinking available to them could produce. It depends on when people feel safe to contribute what they actually know. This productivity gap is measurable in engagement data, psychological safety scores, and quality of decisions teams are making. The critical question worth asking leaders is: what have the people in our organisation decided it isn't safe to say - and what is that silence costing us?

SOURCES & FURTHER READING

• Critcher CR, Ferguson MJ. 'The Cost of Keeping It Hidden.' Journal of Experimental Psychology: General 143(2), 2014

• DCA, Out at Work: From Prejudice to Pride (2018, with RMIT University)

• Edmondson A. 'Psychological Safety and Learning Behavior in Work Teams.' Administrative Science Quarterly 44(2), 1999

• Gartner, 'HR Leaders Must Establish Consequential Accountability' (June 2021)

• Hsieh C-T et al. 'The Allocation of Talent and U.S. Economic Growth.' Econometrica 87(5), 2019

• Levine SS et al. 'Ethnic Diversity Deflates Price Bubbles.' PNAS 111(52), 2014

• Porath CL, Erez A. 'Does Rudeness Really Matter?' Academy of Management Journal 50(5), 2007

• Porath CL, Erez A. 'Overlooked but not Untouched.' Organizational Behavior and Human Decision Processes 109(1), 2009

• Sommers SR. 'On Racial Diversity and Group Decision Making.' JPSP 90(4), 2006