Assessing for potential: building a picture no single test can give you

Hiring for potential means predicting what someone will become, not auditing what they already are. No single instrument does that. The research case is for a battery — ability, personality, judgement, skills and game-based measures — each answering a question the others cannot.

What "potential" is, in measurable terms

The classic finding behind potential-based hiring comes from studies of managerial derailment: many high performers fail when promoted because they keep applying the skills that worked in the last role instead of learning the next one.^[1] Talent research since has converged on "learning agility" — the speed at which people learn from experience and adapt — as the marker organisations use most: a survey of top talent-focused companies found it the most frequent criterion for judging leadership potential, used by 62%.^[2] But learning agility is not a new human faculty; measured carefully, it decomposes into things selection science already knows how to test — cognitive ability, curiosity and openness, drive, and judgement — with learning-agility scores correlating .40–.60 with general cognitive ability.^[3] Potential, in other words, is assessable — as a profile, not a single score.

Five instruments, five questions

01 · Ability tests — Question it answers: How fast will they learn?

General mental ability is the strongest known predictor of training success and remains among the most valid predictors of performance. For potential, it is the core signal: it forecasts how quickly a candidate climbs the learning curve of work they have never done.

02 · Personality questionnaires — Question it answers: Will they keep growing?

Conscientiousness predicts performance across roles; openness and drive predict who seeks out the stretch experiences learning agility is made of. Traits are comparatively stable, which is exactly why they belong in a forecast: they describe the candidate you will still have in five years.

03 · Situational judgement tests — Question it answers: Do they already recognise effective behaviour?

SJTs sample judgement in realistic dilemmas and add predictive value over ability and personality combined. For potential, they show whether a candidate can read situations one level above their experience — the earliest visible sign of headroom.

04 · Work skills tests — Question it answers: What can they do on day one?

Skills tests anchor the profile in the present: current capability with the tools the role uses. In a potential battery they play a second role — the gap between a candidate's skills score and their ability score is itself informative, separating the well-trained from the fast-learning.

05 · Game-based assessments — Question it answers: How do they learn when no one is scoring the answers?

Game-based measures observe behaviour rather than ask about it: how a candidate explores an unfamiliar task, adapts after mistakes and persists through difficulty. They also reduce test anxiety and improve candidate experience, which matters when assessing early-career candidates with little to show on paper.

Why the combination beats any component

Selection research has always found that validity comes from combining predictors that overlap little: ability plus conscientiousness plus a judgement measure predicts better than any one alone, because each captures variance the others miss.^[4,5] For potential specifically, the combination also separates the two ways a candidate can look good today: a strong skills score with a modest ability score describes a well-trained candidate near their ceiling; a modest skills score with strong ability, openness and drive describes an undertrained candidate with headroom. Those two candidates deserve different decisions, and only a battery can tell them apart.

The battery approach also manages risk. Ability tests carry the largest subgroup differences; personality and SJTs the smallest — combining them buys validity while easing the validity–diversity trade-off.^[5] And potential judgements made from a single instrument (or worse, a manager's intuition) are exactly where research finds overconfidence and false positives — self-rated learning agility, for instance, adds little and risks inflating high-potential lists.^[2]

Reading a potential profile

Weight the components by what the role will demand, not by habit. For early-careers hiring: ability and drive first, skills as a floor, judgement as a differentiator. For experienced hires into changing roles: judgement and openness alongside skills. For pipeline and succession decisions: the full profile, benchmarked against the destination role rather than the current one — the derailment literature's central warning.^[1]

Above all, keep the two verdicts separate in reporting: readiness (what the skills and knowledge scores say about day one) and runway (what ability, personality and judgement say about year three). Collapsing them into one number is how organisations hire polished candidates who plateau — and pass over unpolished ones who wouldn't.