METHODOLOGY

The science behind it.

Recrutador is not ChatGPT with a clever prompt. Every step of the product implements an established technique from organizational psychology, with more than 80 years of research underneath it.

This page is for the people who want to see the sources. The methodology is public: anyone can read Schmidt and Hunter or study the Cognitive Interview. What is ours is the engineering that turns those principles into a system that works live, from the first job draft to the final decision. We show the science. And we are honest about where the evidence is strong and where it is only derived.

THE THESIS

Open principles, our implementation

There is a difference between knowing what works and building something that works. The structured-interview literature has been public for decades. Most hiring in the world is still decided on impression. Knowing the principle is not the product.

Recrutador takes each defensible finding from that literature and operationalizes it: the evaluation criteria generate the question library, which guides the live HUD, which structures resume triage, which anchors the final report. One ruler, end to end.

This page explains the science and how it shows up in the product. It does not explain how we built the system. That part is the work.

WHAT THE RESEARCH SAYS

Five findings that hold up the product

Each of these is a replicated result from organizational-psychology meta-analyses. Next to each, how Recrutador implements it.

+34%

Structure predicts better than conversation

A structured interview predicts on-the-job performance about 34% better than a free conversation (predictive validity .51 vs .38). It is the most replicated finding in personnel selection, stable for over 80 years. In Recrutador: every interview starts from the same evaluation criteria.

Schmidt and Hunter (1998); McDaniel et al. (1994); Wingate et al. (2025)

1 ruler

The same criteria for everyone

Criteria defined before any candidate is seen are the single most foundational element of the structured interview, and the basis of legal defensibility. In Recrutador: the Consistency Lock freezes criteria after the first interview. The goalposts do not move mid-process.

Campion, Palmer and Campion (1997); Uniform Guidelines (1978); Alonso et al. (2016)

5 min

Impression forms before the evidence

The interviewer forms a persistent impression in the first few minutes, and everything after tends to confirm it. It is unconscious. In Recrutador: the pre-computed question library makes every candidate enter through the same door, before any impression steers the questions.

Ambady and Rosenthal (1992); Nisbett and Wilson (1977); Dougherty, Turban and Callender (1994)

54%

Instinct does not catch lying

Humans correctly judge a statement as true or false 54% of the time. A coin flip is 50%. Trained professionals do no better. What works is structure: the real signal of a non-genuine answer is a lack of specificity, not body language. In Recrutador: Integrity Signals flag patterns, never render a verdict.

Bond and DePaulo (2006); DePaulo et al. (2003)

Before

Rubric before, not after

Decide what strong evidence looks like before the interview and you score the content. Decide after and you score your impression of the person. Behaviorally anchored scales reduce the halo effect by a documented margin. In Recrutador: the rubric (Strong, Mixed, Weak per criterion) is generated with the criteria, before the first conversation.

Campion et al. (1997); Landy and Farr (1980); Kell (2017)

FROM RESEARCH TO PRODUCT

Where each technique lives in the system

The five phases of the cycle, and the research principle each one operationalizes.

  • 01

    Evaluation Criteria

    Job analysis and pre-defined criteria as the prerequisite for validity and defensibility. The foundation of every structured interview.

  • 02

    Job Description

    Content anchored in the real requirements (content validity), not a generic template.

  • 03

    Resume Triage

    Per-criterion coverage: the candidate's evidence compared against the defined requirements, not against keywords.

  • 04

    Live interview (HUD)

    Adaptive depth derived from the Cognitive Interview: layered questions recover genuine episodic detail and make rehearsed answers stall.

  • 05

    Interview Report

    Assessment anchored in quoted evidence, not in impression reconstructed from memory. Behaviorally anchored scales.

WHERE WE ARE HONEST

What we do not claim

Rigor also means admitting the limits. These points rest on solid principle but lack direct validation in the selection context. We would rather say so than inflate the number.

  • Derived from, not validated by

    The HUD's adaptive depth comes from Cognitive Interview principles, whose evidence base is forensic (witnesses), not personnel selection. The memory mechanism is the same, but the transfer to the employment-interview context has not been validated with the same rigor as the structured-interview meta-analyses. We say derived from, not validated by.

  • Novel AI applications

    Job-description generation and per-criterion resume triage are consistent with content validity and job analysis, but neither has a direct validation study. They are novel applications of established principles, and we treat them as such.

  • Integrity Signals do not detect fraud

    The design (flag low specificity, never render a verdict) is directly supported by the research. The specific thresholds the system uses are ours, not externally validated. That is why the system flags for human review and never accuses.

  • We do not say no one else does any of this

    Several tools cover parts of the cycle. What we have not found is another platform that threads a single ruler, from criteria to report, with a live HUD that augments the interviewer rather than replacing them. The difference is the combination, not any single piece.

SOURCES

The literature, in full

The primary references behind the claims on this page. All verifiable by DOI or publication.

  1. Schmidt, F. L. and Hunter, J. E. (1998). The validity and utility of selection methods in personnel psychology. Psychological Bulletin, 124(2), 262-274.
  2. McDaniel, M. A., Whetzel, D. L., Schmidt, F. L. and Maurer, S. D. (1994). The validity of employment interviews: A comprehensive review and meta-analysis. Journal of Applied Psychology, 79(4), 599-616.
  3. Campion, M. A., Palmer, D. K. and Campion, J. E. (1997). A review of structure in the selection interview. Personnel Psychology, 50(3), 655-702.
  4. Levashina, J., Hartwell, C. J., Morgeson, F. P. and Campion, M. A. (2014). The structured employment interview: Narrative and quantitative review. Personnel Psychology, 67, 241-293.
  5. Wingate, T. G., Bourdage, J. S. and Steel, P. (2025). Evaluating interview criterion-related validity for distinct constructs: A meta-analysis. International Journal of Selection and Assessment.
  6. Latham, G. P., Saari, L. M., Pursell, E. D. and Campion, M. A. (1980). The situational interview. Journal of Applied Psychology, 65, 422-427.
  7. Landy, F. J. and Farr, J. L. (1980). Performance rating. Psychological Bulletin, 87(1), 72-107.
  8. Kell, H. J. (2017). Developing behaviorally anchored rating scales for evaluating structured interview performance. ETS Research Report Series.
  9. Memon, A., Meissner, C. A. and Fraser, J. (2010). The Cognitive Interview: A meta-analytic review of the past 25 years. Psychology, Public Policy, and Law, 16(4), 340-372.
  10. DePaulo, B. M. et al. (2003). Cues to deception. Psychological Bulletin, 129(1), 74-118.
  11. Bond, C. F. and DePaulo, B. M. (2006). Accuracy of deception judgments. Personality and Social Psychology Review, 10(3), 214-234.
  12. Ambady, N. and Rosenthal, R. (1992). Thin slices of expressive behavior as predictors of interpersonal consequences. Psychological Bulletin, 111(2), 256-274.
  13. Nisbett, R. E. and Wilson, T. D. (1977). The halo effect. Journal of Personality and Social Psychology, 35(4), 250-256.
  14. Dougherty, T. W., Turban, D. B. and Callender, J. C. (1994). Confirming first impressions in the employment interview. Journal of Applied Psychology, 79, 659-665.
  15. Alonso, P., Moscoso, S. and Salgado, J. F. (2016). Structured behavioral interview as a legal guarantee for equal employment opportunities. European Journal of Psychology Applied to Legal Context.

The methodology is the foundation. The product is the proof.

See the system run, from evaluation criteria to the final report, with the same ruler end to end.

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