Everyone has advice about how to work and lead — how do you tell good advice from folk wisdom, and why does it matter?

Everyone has advice about how to work and lead — how do you tell good advice from folk wisdom, and why does it matter?

Open any feed and the advice is endless: how to run a one-on-one, how to motivate "Gen Z," which personality type to hire, the five habits of great leaders, the productivity system that changed everything. It is confident, it is everywhere, and most of it has never been tested against evidence. The manager's real problem in 2026 is not a shortage of advice — it is a flood of it, most of it unverified, some of it actively wrong.

The live decision isn't "should we listen to advice" (you can't avoid it). It's whether you appraise advice before acting on it — or whether you adopt practices because a guru, a bestseller, or a competitor swears by them. That choice has a price tag, because the cost of bad advice is never the advice itself. It's the training program you funded, the tool you rolled out, the reorg you ran, and the people decision you made on the strength of it.

The gap between confident advice and tested evidence is wide — and managers already sense it. In an international survey of managers (Barends, Rousseau, Briner and colleagues, 2017, PLOS ONE), respondents broadly endorsed evidence-based practice — but only about 27% reported regularly consulting scientific research, with the top barriers being "lack of time to read research" (58%) and "limited understanding of scientific research" (51%). When busy people can't or won't check the evidence, the vacuum is filled by whoever is most confident and most available — which is exactly what influencers, vendors, and bestsellers are optimised to be.

Popular ideas routinely outlive the evidence that kills them. The clearest case is "learning styles" — the belief that people learn better when teaching is matched to their visual/auditory/kinaesthetic "style." It has essentially no empirical support, yet a review of the field (Newton, 2015, Frontiers in Psychology) found the debunked practice endorsed in the large majority of sampled papers. An idea can be confidently wrong for decades and still shape how organisations train their people — precisely because it sounds right and everyone repeats it.

Even the tools everyone uses often don't do what's claimed. Take workplace personality testing — a fixture of hiring and team-building. As the psychologist Nick Haslam has written (2013, The Conversation), self-report personality tests are undermined by "faking good" and by people's limited insight into themselves, and observer ratings tend to predict job performance better than the self-reports the tests rely on. The point isn't that every tool is worthless; it's that popularity and slick packaging are not evidence, and "everyone uses it" is not a reason.

The fix isn't cynicism — it's a cheap, repeatable habit. Evidence-based management (Barends, Rousseau & Briner, Evidence-Based Management: The Basic Principles, CEBMa) defines the discipline as making decisions "through the conscientious, explicit and judicious use of the best available evidence from multiple sources." Its appraisal loop is five plain steps — Ask, Acquire, Appraise, Aggregate, Apply — and, crucially, it weighs four sources of evidence, not one: the scientific literature, your organisation's own data, the professional expertise of practitioners, and the concerns of the people who'll be affected. Good advice isn't the advice that comes from a study instead of experience — it's the decision that survives all four.

The real split isn't gut versus studies. It's whether you appraise advice at all before acting — or whether "it worked for them" and "it feels right" are enough to move budget and people.

Don't follow the loudest voice — appraise it. The strongest advice and the most confident advice are rarely the same thing, and telling them apart is a skill, not an instinct.

• What to rely on: the best available evidence across four sources — the research, your own numbers, genuine expertise, and the people affected; a simple appraisal habit before adopting any practice; and the plain question "what's the actual evidence this works — here?"
• What to avoid: adopting a practice because a guru, a bestseller, or a competitor swears by it; mistaking confidence and polish for evidence; and the debunked-but-sticky staples — learning styles, personality types treated as gospel, "generational" stereotypes, and the "one weird trick" school of management.
• The point that matters: appraisal is cheap; a wrong bet on your people is not. Ten minutes checking whether an idea has evidence is nothing next to a year and a budget spent rolling out something that was never going to work.

1. Name the advice you're already acting on. Pick one current people practice and ask where it actually came from — a study, or a slide? You'll often find no one remembers.
2. Run the five-step appraisal on your next people decision. Ask (what's the real question?), Acquire (what evidence exists?), Appraise (how trustworthy is it?), Aggregate (what do the sources together say?), Apply (does it fit here?).
3. Weigh four sources, not one. Before you decide, deliberately check the research, your own data, practitioner expertise, and the people who'll live with the decision. If three of four are missing, you're guessing.
4. Kill one zombie practice. Choose a tool you use "because everyone does" — a personality test for team-building, a learning-styles module — and check whether the evidence supports it. If it doesn't, stop.
5. Make vendors and consultants show their evidence. Ask "what's the strongest independent study behind this?" A confident answer with citations is a good sign; deflection or "trust us, it works everywhere" is also an answer.

The Gulf is, if anything, more exposed to this problem — not less. The region runs on ambitious transformation, and it imports a great deal of global "best practice" through international consultancies and frameworks. Vision 2030 itself speaks fluently in the language of evidence — KPIs, benchmarking, maturity models, measured targets in its annual reporting — which is a genuine advantage: an organisation already comfortable with "show me the number" is halfway to "show me the evidence."

But imported best practice is not the same as proven-here practice. A tool that tested well in one market, sector, or culture can quietly fail when it lands in a different context — which is exactly why the appraisal discipline matters more where adoption of external advice is fast and confident. The move for Gulf leaders isn't to distrust global expertise; it's to run it through the same four-source test as everything else: what does the research say, what do our data show, what do experienced people here think, and what do the people affected need?

Honest scope: the "the Gulf imports unproven best practice" observation is an argued read-across, not a claim we found a single quantified study for. The evidence on the advice–research gap and on specific debunked practices is international; the appraisal discipline it points to is universal.

Library / open-licensed sources (Creative Commons; quoted from the publications themselves):

• Barends, E., Villanueva, J., Rousseau, D. M., Briner, R. B., Jepsen, D. M., Houghton, E. & ten Have, S. (2017), Managerial attitudes and perceived barriers regarding evidence-based practice: An international survey, PLOS ONE, 12(10):e0184594 — original · licence: CC BY 4.0. Managers endorse evidence-based practice but only ~27% regularly consult research; top barriers are lack of time (58%) and limited understanding of research (51%).
• Newton, P. M. (2015), The Learning Styles Myth is Thriving in Higher Education, Frontiers in Psychology, 6:1908 — original · licence: CC BY. A popular idea with no empirical support remains endorsed in the large majority of sampled papers.
• Haslam, N. (2013), Who do you think you are? The problems with workplace personality tests, The Conversation — original · licence: CC BY-ND. Self-report personality tests are undermined by "faking good" and weak self-insight; observer ratings predict performance better.
• Barends, E., Rousseau, D. M. & Briner, R. B. (2014), Evidence-Based Management: The Basic Principles, Center for Evidence-Based Management (CEBMa), Amsterdam — original · freely reproducible (CEBMa grants reproduction without prior permission). Defines evidence-based management as using "the best available evidence from multiple sources," via the Ask–Acquire–Appraise–Aggregate–Apply loop across four evidence sources.

Cited findings (named and linked, not republished — these do not carry an open licence):

• Rynes, S. L., Colbert, A. E. & Brown, K. G. (2002), HR professionals' beliefs about effective human resource practices: Correspondence between research and practice, Human Resource Management, 41(2) — publisher. 959 HR professionals; large gaps between common beliefs and research evidence, widest in selection. Cite-only.
• Abrahamson, E. (1996), Management Fashion, Academy of Management Review, 21(1) — publisher. How consultants, gurus and business media manufacture successive "cutting-edge" techniques. Cite-only.
• Costanza, D. P. et al. (2012), Generational Differences in Work-Related Attitudes: A Meta-analysis, Journal of Business and Psychology, 27 — publisher. Generational differences at work are largely a myth. Cite-only.

GCC context:

• Kingdom of Saudi Arabia — Vision 2030 Annual Report 2024 — the national programme's own KPI / benchmarking / evidence language.

For readers who want to go deeper — a few pieces from the Peoplense library, and our own briefs that put this appraisal habit to work on a specific popular practice:

• What five years of evidence on hybrid working tells us — The Conversation: what happens when you let accumulated evidence, not opinion, settle a workplace debate.
• Performance reviews leave a third of workers feeling less motivated, research reveals — a widely-defended practice, measured.
• See the appraisal in action: Should we grade performance on a bell curve? · Should we trust engagement surveys in the Gulf? · Do workplace wellbeing programs actually work? — each takes a popular practice and asks what the evidence really says.