Evidence-based practice on this exam is CEBMa's model: four sources of evidence and a six-step cycle, and the keyed answers reward asking the question before reaching for an answer.
The four sources
Per CEBMa, evidence-based practice draws on four sources:
- The scientific literature
- Organizational data from the organization itself
- Practitioner experience and judgment
- Stakeholder values and concerns
Traps: there is no fifth source of regulators. Benchmarking surveys, vendor research and executive preference are not CEBMa sources and substituting them is the opposite of the method. Using internal data alone, or practitioner experience plus employee anecdotes, fails because it drops sources CEBMa requires.
The six steps
Asking, acquiring, appraising, aggregating, applying, assessing.
- Asking comes first: translate a practical issue into an answerable question.
- Appraising cannot come before acquiring. Applying cannot come before appraising and aggregating; that defeats the method.
Applying it to a scenario
An executive wants a four-day week because a competitor did it and a vendor whitepaper praised it. The most effective first action is to translate the issue into an answerable question and then gather evidence from all four sources.
- Copying the competitor rests on one weak slice of external evidence.
- Letting the vendor run the pilot hands appraisal to the party with an interest in the answer.
- Surveying employees and following the majority uses only stakeholder values and drops the other three sources.
Where workforce planning lives now
The 2014 BOCK named staffing projection approaches and external labor market PEST factors under a People area. The current BASK names PESTLE among HR Strategy's analysis frameworks, so that analytical content carried over into HR Strategy rather than disappearing. The BOCK has been superseded since 2022 and is not the current blueprint.