How to Assess Soft Skills in Candidates: The Proven, Research-Backed Method
How to assess soft skills with reliable, science-backed methods proven to improve hiring accuracy and efficiency.
Here's a question: how much is unconscious bias costing your organisation this year?
If you're like most hiring teams, you might not have a clear answer. But the research tells a sobering story for UK businesses:
✗ 73% of UK hiring managers admit to making gut-based decisions (CIPD, 2023)
✗ Companies with diverse leadership teams are 25% more likely to outperform competitors (McKinsey Europe, 2024)
✗ The average cost of a bad hire in the UK is £132,000 (CareerBuilder UK, 2023)
✗ 84% of UK organisations believe unconscious bias affects their hiring decisions (Equality and Human Rights Commission, 2023)
But what does bias actually look like in your daily hiring? You probably recognise these scenarios:
The frustrating part? Most of this happens unconsciously. Your team aren't trying to be biased - they're making quick decisions under pressure.
The solution isn't to eliminate bias from people (impossible), but to build systems that protect candidates from the effects of bias.
Video summary: Business psychologist Ben Schwencke explains five research-backed strategies to reduce bias and build fairer hiring processes.
Let's dive into the five proven steps that actually work...
Think of unconscious bias like a virus. You can't eliminate it completely, but you can build immunity and install protective measures.
Your two-pronged defence strategy:
Start with education. Help your team recognise common biases like the halo effect, confirmation bias, and affinity bias. But keep expectations realistic - bias training raises awareness without rewiring brains overnight.
Instead of hoping people won't be biased, create systems that minimise bias impact:
The key insight? Bias protection works best when it's automatic, not when it relies on people remembering to be fair.
Pro tip: Test Partnership's assessments automatically remove personal identifiers during evaluation, giving you bias-free candidate insights from day one.
Even if your team becomes perfectly unbiased (spoiler: they won't), your assessment tools might still be systematically excluding great candidates.
This is called adverse impact - when an assessment produces significantly different outcomes for different groups, regardless of actual job performance potential.
Watch for these warning signs: gender gaps in scoring, over-indexing on university prestige, cultural bias in questions, or accessibility issues that disadvantage certain candidates.
Your bias audit checklist: Track pass rates by demographics, review job requirements for actual relevance, demand technical manuals from assessment providers, and monitor results quarterly.
Not all assessments carry equal bias risk:
Assessment Type | Bias Risk | Why It Matters |
---|---|---|
Personality Assessments | Low | Measure behavioural traits consistent across groups |
Situational Judgement Tests | Low | Focus on workplace decision-making, not learned knowledge |
Skills Simulations | Medium | Job-relevant but may reflect training opportunities |
Cognitive Ability Tests | Higher | Can reflect educational background differences |
Knowledge Tests | Highest | Strongly influenced by educational and cultural background |
Focus on personality and behavioural assessments for early-stage screening, then use targeted skill assessments only when directly job-relevant.
Smart strategy: Our personality assessments are specifically designed to minimise adverse impact while maximising predictive accuracy.
See how our bias-resistant assessments work
Discover the difference that scientifically validated, accessible assessments make to your hiring outcomes.
Book a DemoAccessibility bias affects 15% of the UK population (Office for National Statistics, 2023) and it's often completely avoidable. You might find the perfect candidate who can't complete your assessment because your platform doesn't work with screen readers.
Don't wait for candidates to request accommodations. Build accessibility into your process from the start.
Essential actions: Ensure screen reader compatibility, offer extended time automatically, provide multiple formats (written, audio, large print), test with assistive technologies, and train your team on accommodation requests.
Before choosing assessment tools, verify: WCAG 2.1 compliance, screen reader testing, accommodation turnaround times, and accessibility documentation.
Test Partnership advantage: All our assessments are built with accessibility in mind, including WCAG 2.1 compliance and comprehensive accommodation options.
Here's what most hiring teams don't realise: candidates from underrepresented groups are more likely to interpret negative experiences as signs of systemic bias. When your process feels unfair, diverse candidates drop out at higher rates.
Transparent communication: Set clear expectations about timing, explain why you use assessments, provide progress updates, and offer meaningful feedback regardless of outcome.
Respect and dignity: Respond to applications within 48 hours, personalise communications, ask thoughtful questions about career goals, and keep assessments as short as possible while maintaining validity.
When you create genuinely inclusive experiences, diverse candidates don't just complete your process - they actively advocate for your company, referring other talented candidates from their networks.
Real impact: Our clients report that improving candidate experience increased diverse applicant completion rates by an average of 23%.
Innovative assessment technologies are specifically designed to minimise bias while maximising candidate engagement. Here are the breakthrough technologies transforming fair hiring:
Computer Adaptive Testing (CAT) adjusts question difficulty in real-time. This eliminates frustration, reduces dropout, maximises accuracy, and levels playing fields by giving every candidate questions matched to their ability level.
Gamified assessments are mobile-optimised, reduce reading burden, offer cultural neutrality, and create lower-stress experiences for all candidates.
Differential Item Functioning (DIF) identifies and eliminates biased questions at the individual item level, ensuring questions work fairly across different demographic groups.
Bespoke assessments aligned to your competency frameworks eliminate irrelevant factors that introduce bias, focusing only on job-relevant traits.
Innovation advantage: Test Partnership incorporates all these bias-reduction technologies as standard, giving you access to the most advanced fair hiring tools available.
Start immediately: Implement blind CV screening and standardised questions this week. Plan ahead: Research bias-resistant assessment providers and track your diversity metrics. Transform completely: Schedule a platform demo to see exactly how modern assessment technology eliminates bias.
Remember: Reducing bias isn't a one-time project - it's an ongoing commitment to fair hiring. The tools you implement today will continue protecting candidates and improving your hiring quality for years to come.
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