Foundations of Modern Management and Evidence-Informed Planning · Lesson 3

Evidence-Based Management: From Claim to Decision

5 min read

Lesson objectives

Frame a management problem as an answerable question rather than starting with a preferred solution.
Use the ask–acquire–appraise–aggregate–apply–assess cycle.
Appraise evidence for relevance and trustworthiness and identify what needs local testing.

From “I think this will work” to a question that can be examined

Evidence-based management does not mean that managers stop using professional judgment or wait for a perfect study before every decision. It means making the basis of a decision explicit, seeking the best available evidence from more than one source, examining its trustworthiness and relevance to the context, then applying the decision and reviewing the outcome. The process can be organized into six connected moves: ask an answerable question, acquire evidence, appraise it critically, aggregate it, apply it in the decision, and assess what happened. This cycle makes learning part of the decision rather than ending thought at implementation.

Step	What the manager does	Useful question
Ask	Turn the issue into a specific question.	What decision is needed, for whom, and over what period?
Acquire	Gather relevant evidence from available sources.	What data, expertise, research or affected-party input is available?
Appraise	Test trustworthiness and relevance.	Does the source measure what we need, and is the context comparable?
Aggregate	Weigh evidence rather than relying on one piece.	Where do sources agree or conflict?
Apply	Choose an action suited to context and constraints.	What decision is feasible now?
Assess	Monitor results and unintended effects.	What actually happened and what can we learn?

Evidence is not a synonym for a number

You may have an excellent dashboard that does not answer the right question, long experience from a different context, strong research that does not fit your organization, or stakeholder observations that reveal an effect hidden by averages. The point is not that one source always wins; each source adds a perspective and needs appraisal. Ask where the information came from, how it was collected, whether it is timely for the decision, and whether it represents the people or processes concerned. When evidence is limited, label the decision as a test and specify what you will measure so the organization learns quickly.

Test the claim before buying the tool

Exercise

Exercise 1 — Turn a claim into a question: “A daily meeting will increase productivity.” Write a management question that can be examined, specifying the team or process, the desired outcome, and one side effect you do not want to hide. Then name three different sources of evidence you would examine.

Check your answer

Guided solution to Exercise 1: “For the support team, does a 10-minute daily meeting over four weeks reduce turnaround time for complex cases without increasing total meeting time or reducing deep-work time?” Possible evidence sources include current turnaround data, supervisor and support-staff experience, and team observations about delay causes; suitable research can be added if available. The question specifies an outcome, test and side effects instead of assuming the answer.

Exercise

Exercise 2 — Appraise the evidence: for a fictional training decision you have three pieces of evidence: (a) a manager says an old course “was excellent,” (b) data show processing errors are concentrated in two specific case types, and (c) a staff survey requests more training but does not identify the topic. Which evidence is most relevant for defining training content, and what is still missing before the decision?

Check your answer

Guided solution to Exercise 2: the error-pattern data are most relevant for defining possible training content because they locate the problem, but they do not prove that lack of training caused it or that training is the right solution. You still need to investigate causes, ask practitioners and affected people, and perhaps test a small intervention. The manager’s view and survey are useful for experience and perceived need, but neither alone identifies effective content.

Lesson summary

Lesson recap: evidence-based management makes the question, evidence source, quality, relevance and decision outcome visible. It does not eliminate professional judgment; it makes judgment explainable and reviewable. When evidence is limited, reduce the size of the bet and learn from a controlled test rather than presenting a management fashion as a universal truth.