How to Assess Soft Skills in Candidates: The Proven, Research-Backed Method
Learn how to assess soft skills with reliable, science-backed methods proven to improve hiring accuracy and efficiency.
If you're manually screening applications and relying on pre-screening interviews as your first filter, you already know the problem. The average UK job posting receives 118 applications (Builtin, 2024). But here's the kicker: 73% of those applicants aren't even qualified for the jobs they're applying to (SparkHire, 2024).
Think about that for a moment. You're spending hours screening nearly 120 applications for every role, when almost three-quarters aren't suitable. Only 2% of candidates who apply actually get selected for an interview (Standout CV, 2024).
The maths is brutal: For 118 applications, you'll interview about 6 candidates and hire 1. That means you're manually filtering 112 unsuitable candidates for every hire.
No wonder 75% of UK recruiters say attracting suitable talent is their biggest challenge (Oleeo, 2024). But the real issue isn't attracting talent—it's identifying who's actually suitable from the flood of applications you're already receiving.
Pre-screening interviews seem logical. Have a quick chat, assess basic fit, and decide who progresses. But they create three critical problems that get worse as your application volume increases.
Let's say you want to pre-screen just half of those 118 applicants. Even 15-minute calls would take you 14.75 hours per role. That's nearly two full working days before you've made a single hire.
And remember, one in three UK businesses have made bad hires because of the need to fill positions quickly (Protocol, 2024). The time pressure is real.
Here's what decades of research tells us about interview effectiveness:
Translation: interviews are barely better than random chance for predicting who'll succeed in the role.
When you're rushing through high volumes, interview bias amplifies. 33% of hiring managers decide whether to hire a candidate within 30 seconds of meeting them, and 79% of HR departments believe unconscious bias plays a role in their hiring process (Standout CV, 2024).
Bad hires cost UK employers £6,125 on average (CIPD, 2024) and can reduce team productivity by 72% (Brandon Hall, 2024).
Bias can occur in something as simply as a candidate's accent.
Bias can occur in something as simply as a candidate's accent. Here is Ben Schwencke talking about the latest research.
Smart hiring teams flip the process: assess first, interview the qualified. While interviews struggle with volume and bias, psychometric assessments excel at both scalability and accuracy.
The research is clear: cognitive ability tests predict job performance with 65-70% accuracy, while personality assessments reach 40-50% accuracy. Both require zero time from your team and can screen unlimited candidates.
✓ 24-25% increase in employee performance when companies use psychometric assessments
✓ 50% improvement in hiring accuracy when assessments are combined with structured interviews
✓ Zero time investment from your team for initial screening
✓ Complete elimination of first-impression bias in early screening
Step 1: Assessment screening (all candidates)
All 118 candidates take a 20-minute assessment combining cognitive ability, personality, and relevant skills tests. Zero time from your team, objective results for everyone.
Step 2: Strategic interviews (top candidates only)
Interview only the 6-8 candidates who've already proven they have the cognitive ability and behavioural traits for success. Focus on cultural fit, motivation, and role-specific context.
Time saved: From 14+ hours screening unsuitable candidates to 3-4 hours interviewing qualified ones.
Three simple steps to get started:
Choose your assessments: Most roles need cognitive ability + personality. Add skills tests if relevant.
Integrate with your process: Add to job postings or send after application. Most platforms integrate with your ATS.
Review and interview: Set score thresholds, review reports, interview top candidates only.
Immediate results: Reduced time-to-hire, better interviews, higher offer acceptance, improved new hire performance.
When you do interview (with pre-qualified candidates), these questions work best:
The difference: Since candidates already proved their abilities, you're exploring fit and motivation—not guessing at basic competencies.
Bottom line: Use assessments for screening, interviews for final selection. The science is clear, the time savings are dramatic, and the hiring accuracy improvements speak for themselves.