Most interview advice is written for the candidate and treats the interview as a performance. The public material that federal hiring runs on treats it as something else entirely: a *test*, built from a job analysis, scored against fixed scales, and defended if challenged. That view is more useful from either side of the table. It explains why the questions sound the way they do, why the interviewer is writing while you talk, and why the thing being measured is narrower than "how the conversation went". Read this for the machinery — where questions come from, how answers are scored, what the scoring gets wrong, and where the law draws hard lines.
Each chapter opens with the short version. Tap one to read the detail.
What makes an interview "structured"
~2 min
A structured interview standardises two things: the questions every candidate is asked, and the scale their answers are scored against. That standardisation is what turns a conversation into a measurement, and it is also what makes the interview defensible.
Reliability, validity, and why "we know a good one when we see one" fails
~2 min
Reliability is consistency; validity is whether the thing measures what it claims. An assessment can be perfectly consistent and still measure the wrong thing, which is the failure mode confident interviewers never notice.
Where the questions come from
~2 min
Questions in a structured interview are not invented; they are derived from a job analysis that identifies the job's tasks and the competencies needed to perform them. Everything downstream inherits that link.
Proficiency levels: the same competency at different altitudes
~2 min
Competencies are not present or absent — they exist at levels, and the levels are distinguished by the scope and complexity of what someone has actually done, not by how fluently they describe it.
Building the questions, and what a good one looks like
~2 min
A usable interview question is tied to a job responsibility, open-ended, clear, concise, jargon-free, and pitched at the candidate's reading level. Each question should target one competency, so the rating means something specific.
Rating errors: the five ways scoring goes wrong
~2 min
Scoring failures are systematic and named. The important thing about them is that each one feels like careful judgement from the inside, which is why procedure rather than intention is the defence.
The interview is one instrument among several
~3 min
Interviews sit in a toolkit that includes situational judgment tests, work samples, and evaluations of training and experience. Each measures different things at different costs, and the interview is not automatically the best of them.
What a complete answer contains
~2 min
Behavioral answers are scored on evidence of what you did, so an answer needs enough situation to make the action legible, the action itself in the first person, and the outcome. Missing any of the three leaves the rater with nothing to score.
Where the interview sits in the wider process
~2 min
The interview is one stage in a pipeline that starts with eligibility and qualification standards. Candidates who treat the earlier stages as formalities are filtered out before anyone reads their examples.
Leadership assessment and its own vocabulary
~2 min
Senior roles are assessed against a published set of executive qualifications rather than ordinary job competencies, and the narratives are scored on scope and demonstrated result. That set is currently being revised, so verify it at the source.
The lines an interview may not cross
~2 min
Some questions are unlawful regardless of intent, and the sharpest rule in the area is about timing: disability-related questions and medical examinations are not permitted until after a conditional job offer.
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