--- title: "Face validity" description: "Face validity is whether a test looks relevant to the people taking it. It is not evidence that the test measures anything, and an instrument can be highly valid with poor face validity or the reverse. It matters anyway, because it drives completion rates, candidate goodwill and whether a hiring manager trusts the result." canonical: https://www.assessall.com/guides/glossary/f/face-validity updated: 2026-09-17 source: AssessAll --- # Face validity Face validity is whether a test looks relevant to the people taking it. It is not evidence that the test measures anything, and an instrument can be highly valid with poor face validity or the reverse. It matters anyway, because it drives completion rates, candidate goodwill and whether a hiring manager trusts the result. ## Why a non-statistical property still belongs in the decision Face validity has no place in a validity argument and a large place in an implementation plan. A test that candidates find irrelevant produces drop-out, careless responding and complaints, all of which degrade the data that the statistical validity was computed on. It also determines whether the result gets used. A hiring manager who cannot see why a puzzle predicts anything will override the score, and an instrument that is routinely overridden has no effect on hiring quality regardless of its coefficients. ## The trade-off worth naming Work samples and situational judgement tests tend to have high face validity because they visibly resemble the job. Abstract reasoning tests often have low face validity and can still predict well. The wrong response to low face validity is to swap in a less valid instrument that looks better. The right one is to explain the link to the job in the invitation, and to place the more abstract instrument where the candidate has already seen something recognisable. ## What the evidence actually shows, and it is larger than the folklore The standard reference is a meta-analysis of 86 independent samples covering 48,750 people: Hausknecht, Day & Thomas (2004) in Personnel Psychology. Its abstract reports that “Face validity and perceived predictive validity were strong predictors of many applicant perceptions including procedural justice, distributive justice, attitudes towards tests, and attitudes towards selection” — so the thing with no standing in a validity argument is one of the strongest drivers of how the process is received. The same abstract ranks the methods by how favourably applicants view them: “Interviews and work samples were perceived more favorably than cognitive ability tests, which were perceived more favorably than personality inventories, honesty tests, biodata, and graphology.” Read that against the 2022 validity re-estimates and the ordering is informative rather than embarrassing — structured interviews and work samples are both well regarded by candidates and near the top of the revised validity table, so the trade-off is smaller than it is usually described. One finding is worth quoting to anyone who assumes reactions are a demographic story: the paper reports that “the average correlation between applicant perceptions and gender, age, and ethnic background was near zero.” Candidates of every description dislike the same things, and what they dislike is a process whose relevance nobody explained. ## Why it shows up in the offer-acceptance number The meta-analysis found that applicants holding positive perceptions “are more likely to view the organization favorably and report stronger intentions to accept job offers and recommend the employer to others.” That is the mechanism by which a non-statistical property reaches a commercial outcome, and it is why face validity belongs in the implementation plan even though it stays out of the validity argument. The practical consequence is an ordering decision rather than an instrument decision. If an abstract test has to be in the battery, it should not be the candidate’s first impression of the employer, and the invitation should say in one plain sentence what it is for. --- Source: https://www.assessall.com/guides/glossary/f/face-validity