Is the figure that half of CEOs are lonely reliable?

It comes from an RHR International survey reported in Harvard Business Review in 2012. It is a practitioner survey rather than peer-reviewed research, and it is over a decade old. Quote it for what it is.

Journal · Evidence

Executive loneliness, in numbers worth quoting

Q: What percentage of leaders feel isolated?

In the French data, Bpifrance Le Lab found 45% of SME and mid-cap leaders describing themselves as isolated in 2016, and close to 49% a decade later, with the severely isolated share rising from about 11% to 18%.

The figures on this subject circulate without their sources. These are the ones we could trace, with what they do and do not establish.

Evidence · 5 min read

How many leaders feel isolated? In the French data, which is the most systematic on this question, Bpifrance Le Lab found 45% of SME and mid-cap leaders describing themselves as isolated in 2016, and close to half a decade later. The most quoted international figure, around half of CEOs, comes from a practitioner survey rather than peer-reviewed work.

Two bodies of data are usually mixed together here, and they do not carry the same weight.

The French studies, which are the more solid

Bpifrance Le Lab, 2016. Its study on leader isolation drew close to 2,400 responses from a sample of 30,000 solicited, which makes it one of the larger datasets on the question anywhere. 45% of SME and mid-cap leaders described themselves as isolated. A decade later the update puts it near 49%.
The intensity is what moved. The share describing themselves as severely isolated went from roughly 11% to 18% over the same ten years. The study separates seven distinct forms, of which the loneliness of deciding is only one.
The traditional venues are emptying. Participation in employers' organisations fell from around 28% to 19% across the same period. More ways to reach people than ever, fewer leaders finding a setting where anything real gets said.
Observatoire Amarok, Olivier Torrès. Following more than 350 leaders over time, isolation came out as the leading risk factor for leader burnout, ahead of workload. That reframes the subject: it is a health question before it is a comfort question.

The figure everyone quotes, and what it is

The number you will see repeated, half of CEOs report loneliness and 61% of those believe it hurts their performance, comes from an RHR International survey reported in Harvard Business Review in 2012. It is a practitioner survey, not peer-reviewed research, and it is more than a decade old. It is quotable if you say what it is; it is not evidence of a trend.

A figure repeated by aggregators is not a source. Ask who counted, how many, and when.

What the numbers do not settle

None of this establishes that any particular remedy works. Isolation is measured; the effect of joining a group, hiring a coach, or convening a board is not, at least not with anything we would cite. What the data supports is narrower: the condition is common, it is getting more intense, and the places built to address it are losing members.

Five Peers editorial note. Sources named in the text, with their nature: two French studies, one practitioner survey.

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