[SpeedilyDamage]

> First, what evidence do we have that diversity does result in a company performing better, or gaining that amazing employee? He argues that this is an unfounded assumption.

It's not an assumption.

> Along all dimensions measured, the more similar the investment partners, the lower their investments’ performance. For example, the success rate of acquisitions and IPOs was 11.5% lower, on average, for investments by partners with shared school backgrounds than for those by partners from different schools. The effect of shared ethnicity was even stronger, reducing an investment’s comparative success rate by 26.4% to 32.2%. [0]

> Increased diversity in the healthcare workforce helps reduce or eliminate racial health disparities, according to a 2014 meta-analysis of 25 studies. [1]

> A large-scale study of all Texas schools reveals diversity’s impact in public education systems. They find student performance most-improved when there was greater management diversity, and a closer racial match (representation) between management and student. [2]

> Most of the sixteen reviews matching inclusion criteria demonstrated positive associations between diversity, quality and financial performance. Healthcare studies showed patients generally fare better when care was provided by more diverse teams. Professional skills-focused studies generally find improvements to innovation, team communications and improved risk assessment. Financial performance also improved with increased diversity. A diversity-friendly environment was often identified as a key to avoiding frictions that come with change. [3]

> Our latest report shows not only that the business case remains robust but also that the relationship between diversity on executive teams and the likelihood of financial outperformance has strengthened over time. These findings emerge from our largest data set so far, encompassing 15 countries and more than 1,000 large companies. By incorporating a “social listening” analysis of employee sentiment in online reviews, the report also provides new insights into how inclusion matters. It shows that companies should pay much greater attention to inclusion, even when they are relatively diverse. [4]

> Using data from the 1996 to 1997 National Organizations Survey, a national sample of for-profit business organizations, this article tests eight hypotheses derived from the value-in-diversity thesis. The results support seven of these hypotheses: racial diversity is associated with increased sales revenue, more customers, greater market share, and greater relative profits. [5]

This is just the tip. Study after study shows diversity improves outcomes of group work, it's really hard to justify believing otherwise, in light of the overwhelming data.

[0] https://hbr.org/2018/07/the-other-diversity-dividend

[1] https://www.ucdenver.edu/docs/librariesprovider68/default-do...

[2] https://academic.oup.com/jpart/article/15/4/615/991022

[3] https://pubmed.ncbi.nlm.nih.gov/30765101/

[4] https://www.mckinsey.com/featured-insights/diversity-and-inc...

[5] https://journals.sagepub.com/doi/10.1177/000312240907400203

[crackercrews]

I haven't read all these studies but wonder if they claim causality or mere correlation. I see lots of correlation, which could be reverse correlation in disguise. Companies that are on a good trajectory decide to engage in more DEI than companies that are fighting to survive. Analysts conclude that DEI and success are correlated. They don't consider the possibility that the causal arrow runs the other way.

[hunter2_]

True, and it could even be as simple as: well-educated people make companies more successful, and they pursue diversity more, compared to other people -- i.e., one input has these two outputs.

[jensensbutton]

> I haven't read anything, but I have opinions.

Great contribution.

[hunter2_]

A pattern I'm seeing here is the possibility that these beneficial outcomes could be rooted in racism/sexism/etc.: having enough diversity among staff such that you can easily pair up people (provider and patient, fiduciary and client, or whatever scenario) who share personal characteristics can increase trust and synergy between them? Ugh!

[slowmovintarget]

Great! All the more reason to focus on the underlying problem and not just where it's detected.