Evidence
Structured beats unstructured, and both are noisier than people think
For twenty years the standard reference was a 1998 meta-analysis by Frank Schmidt and John Hunter in Psychological Bulletin, which ranked selection methods by how well they predict job performance and put work sample tests and structured interviews near the top.
A 2022 re-analysis by Paul Sackett and colleagues in the Journal of Applied Psychology showed that the older figures were inflated by a correction applied incorrectly, and revised most of them downward. Structured interviews and work samples remain among the better predictors. The honest summary is that the best available methods are useful and considerably weaker than the confident numbers everyone quotes.
Claim
Structured means the same questions in the same order
A structured interview asks every candidate the same predetermined questions and scores answers against a defined scale. An unstructured interview is a conversation that goes where the interviewer feels like going.
The unstructured version is worse at prediction and better at making the interviewer feel confident, which is why it survives. What it mostly measures is similarity to the interviewer. You cannot control which you get, so prepare for the structured version and treat any interview that turns into a pleasant chat as a warning sign about how the company decides things.
Action
Build four artifacts from the evidence file
Take four rows from day 2 and write each one up in four parts: the situation, what you were responsible for, what you did specifically, and the measured result. This shape is often called STAR, for situation, task, action, result.
Aim for ninety seconds spoken, which is about 200 words. Pick four that cover different ground: one delivery under pressure, one conflict with another person, one failure you caused, one thing you decided to stop. Practice them out loud once. Not to memorize, but because the first time you say any of this aloud it comes out badly, and you would rather that happen in your kitchen.
Claim
You are also running an interview
Every interview is two assessments and most candidates only prepare one. You need to leave knowing what the job actually involves, which is not what the description says.
Four questions that work, asked plainly: what does the person in this role spend Tuesday doing, why is the role open, what happened to the last person in it, and what would make you consider this hire a mistake in six months. The last one is uncomfortable to ask and produces the most information per second of any question in this course. Ask it at the end, in a level voice, and then be quiet long enough for the answer to arrive. The pause is where the useful part lives, because a rehearsed answer runs out after one sentence.
Example
Priyesh asked the last of those four questions at the end of a second interview. The hiring manager paused and said: if you turn out to need a lot of direction, because I am not going to be able to give you much this year.
That single sentence contained the actual job. The description had said collaborative environment with strong support. He took the role anyway, with clear eyes, and negotiated a monthly thirty minute standing slot as a condition, which he would never have thought to ask for. Eighteen months later he said that slot was the reason the job worked.
Caution
Do not confuse rapport with an offer
A warm interview means the interviewer enjoyed it. It does not mean you are the leading candidate, and men routinely stop their search after one that went well, then lose three weeks when the rejection arrives.
Run the process as if every interview will fail until an offer is in writing. Keep applying, keep the other conversations alive, and be pleasant about it. The strongest position in day 5 comes from having somewhere else to be, and that position is built now, not during the salary conversation.
Aside
If you are the one hiring
The same evidence pushes you somewhere specific: write the questions before you meet anyone, ask all candidates the same ones, score each answer as you hear it, and add a small work sample that resembles the actual job. It is duller than an unstructured chat and it makes better hires.
It also constrains you, which is the real reason it gets abandoned. Structure means you cannot promote the candidate you clicked with unless he actually scored higher, and that is the entire point. Most interview processes are unstructured because the people running them prefer their own judgment to a record of it.