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Interpersonal Skills: 9 to Assess in Candidates (2026)
Assess these 9 essential interpersonal skills to find candidates who communicate well, work effectively in teams, and add value.Interpersonal skills are the people skills a candidate uses to work with others: how they communicate, handle disagreement, read a room, and move a team toward a shared goal. To assess interpersonal skills well, you watch behavior under real conditions (a structured interview, a work sample, a validated test) and score what you see against a fixed scale, not a gut feeling. This guide covers the 9 interpersonal skills worth checking before you hire, and a repeatable way to score each one.
Here is why it earns the effort. LinkedIn ranked communication the #1 most in-demand skill of 2024, for the second year running, and 9 in 10 executives told LinkedIn that soft skills matter more than ever. Skills like these are slow to teach on the job and costly to get wrong, so the cheapest place to catch a gap is before the offer goes out.
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PerplexityTL;DR
- Interpersonal skills are the people-facing slice of soft skills: communication, teamwork, leadership, emotional intelligence, adaptability, problem-solving, conflict resolution, time management, and digital collaboration.
- Assess them with evidence, not vibes. One signal is an opinion; a structured interview plus a test plus a reference check, scored on the same scale, is closer to proof.
- Communication is the highest-frequency skill (LinkedIn ranked it #1 for 2024), but weight each skill to the role, not the same for every job.
- Use the Testlify Interpersonal Skills Scorecard: name the signal source, check consistency across signals, weight by role-fit, and run a red-flag check.
- The common mistakes: scoring charisma instead of behavior, skipping a rubric, and testing skills the job does not actually need.
What are interpersonal skills?
Interpersonal skills are the abilities you use to interact with other people well: listening, explaining, cooperating, influencing, and working through friction. They sit inside the wider bucket of soft skills, but with one difference. A soft skill like time management can be practiced alone; an interpersonal skill only shows up when someone else is in the room. That is exactly why they are hard to fake on a resume and worth testing directly.
Why do interpersonal skills matter when hiring?
Because most work now runs through other people, across more channels and less face time than a few years ago. The World Economic Forum’s Future of Jobs Report 2025 names analytical thinking the top core skill (about 7 in 10 employers call it essential) and ranks resilience, flexibility, and agility as the biggest skill gap between growing and shrinking roles. Gallup found that managers account for at least 70% of the variance in team engagement, and a manager’s edge is mostly interpersonal: how they listen, coach, and handle conflict.
The cost of getting it wrong is concrete. SHRM puts the average cost per hire near $4,700, and estimates the all-in cost of a bad hire at three to four times the role’s salary once ramp time and lost productivity are factored in. Most of that loss is interpersonal: the new hire who can do the job technically but derails the team around them.
Which interpersonal skills should you assess?
Start with the nine below. They cover the people skills that show up in almost every role, from a first sales hire to a head of engineering. Two of them, problem-solving and time management, are really self-management skills, but they shape how someone shows up for a team, so most hiring teams check them in the same pass. Use the table to match a skill to a fast way to measure it, then read the section that matters for your role.
| Interpersonal skill | What it signals on the job | Fastest way to assess it |
|---|---|---|
| Communication | Communicates clearly, actively listens, and adapts messages to different audiences | Written exercise plus a structured verbal scenario scored against a rubric |
| Teamwork and collaboration | Works effectively with others, supports teammates, and manages cross-functional handoffs | Group exercise or behavioral questions about team successes and challenges |
| Leadership and influence | Provides direction, builds alignment, and gains buy-in without relying on authority | Behavioral interview combined with a leadership assessment |
| Emotional intelligence | Recognizes emotions, demonstrates empathy, and remains composed under pressure | Situational judgment test supplemented by reference checks |
| Adaptability and flexibility | Responds well to change, learns quickly, and adjusts priorities when needed | Behavioral interview questions focused on navigating change |
| Problem-solving | Analyzes complex situations, evaluates options, and makes sound decisions | Work-sample assessment based on a realistic job-related challenge |
| Conflict resolution | Addresses disagreements constructively and works toward practical solutions | Role-play exercise or behavioral interview focused on past conflicts |
| Time management | Prioritizes effectively, manages competing demands, and consistently meets deadlines | Prioritization exercise involving multiple tasks and deadlines |
| Digital collaboration | Collaborates effectively using remote communication and productivity tools | Asynchronous writing exercise combined with a short recorded response |
1. Communication
Communication is the skill of getting an idea from your head into someone else’s with as little loss as possible, and listening well enough to catch theirs. In hiring, it is the highest-frequency skill on the list, which is why LinkedIn put it first. What to look for: does the candidate answer the question you actually asked, adjust the detail level to you, and write a clean follow-up email? A communication assessment plus a short written task surfaces both the verbal and the written side, which often differ in the same person.
2. Teamwork and collaboration
Teamwork is the willingness to trade a little personal credit for a better shared result. Strong collaborators unblock the people around them and make handoffs smooth instead of lossy. Ask for one team win and one team mess, and listen to how they talk about the mess: do they own a part of it or blame the room? Pair the answer with a teamwork assessment, and remember that healthy collaboration depends on the environment too, so it is worth thinking about the culture they will land in.
3. Leadership and influence
Leadership is not a title. It is the ability to set a direction and get people to move with you when you have no authority over them, which is most of the time for individual contributors, too. Look for candidates who can describe how they changed someone’s mind without pulling rank, and who talk about the team’s outcome before their own. A leadership assessment works for managers and for senior ICs who lead through influence rather than headcount.
4. Emotional intelligence
Emotional intelligence is reading the room and managing your own reactions: noticing when a teammate is overloaded, staying calm when a launch slips, and choosing the next sentence instead of firing off the first one. It is the quiet engine under teamwork and conflict resolution. Behavioral questions help, but they are easy to game, so back them with an emotional intelligence test and a reference who has actually watched the person under stress.
5. Adaptability and flexibility
Adaptability is how someone behaves when the plan changes, which it always does. The WEF ranks this cluster (resilience, flexibility, agility) as the sharpest divide between roles that are growing and roles that are shrinking. Ask about a time the goal moved mid-project and what they did in the first 48 hours. You want a candidate who re-planned fast without drama, not one who waited for perfect clarity. An adaptability assessment gives you a baseline to compare across candidates.
6. Problem-solving
Problem-solving is the habit of breaking a messy situation into parts, weighing the options, and committing to a call. It is partly cognitive and partly interpersonal, because most real problems get solved with other people in the loop. The strongest signal is a work sample built from a real problem the role faces, not a brain-teaser. For a fuller setup, see how a problem-solving test sharpens screening before the first interview.
7. Conflict resolution
Conflict resolution is the ability to name a disagreement out loud and steer it to a workable result without scorching the relationship. Every team has friction; the question is whether your hire makes it smaller or bigger. In an interview, a short role-play (a tense conversation with a peer) tells you more than a tidy story they rehearsed. Score the approach, not the politeness, with a conflict resolution assessment as a second read.
8. Time management
Time management is prioritization under pressure: knowing which task actually matters this week, protecting deadlines, and turning down work that does not fit. It reads as a solo skill, but a person who misses handoffs drags a whole team. A quick prioritization exercise (here are six competing tasks and two hours, what do you do?) plus a time management assessment beats asking “are you organized?” and hoping.
9. Digital collaboration
Modern work happens across chat, documents, project management platforms, and video calls, making digital collaboration an essential workplace skill. It goes beyond knowing how to use the tools; it’s about communicating clearly in asynchronous environments, sharing information effectively, and collaborating without creating unnecessary meetings or confusion. The best way to assess this skill is to mirror real work conditions. A short written exercise and a brief recorded response can reveal how well candidates communicate, organize their thoughts, and engage across the channels they’ll use every day.
What interview questions reveal interpersonal skills?
Behavioral questions are the ones that ask about a specific past situation, not a hypothetical, give you the most reliable window into how someone actually behaves with other people. Ask the same questions to every candidate and score the answers against a fixed rubric before you debrief. Here are five, one for each of the highest-signal skills.
Communication
Question: Tell me about a time you had to explain something complex to someone with no background in your field. How did you approach it, and how did you know it landed?
What to listen for: Did they adjust their language and check for understanding, or did they just repeat themselves louder? A strong answer describes a specific adjustment they made, not a general willingness to simplify.
Teamwork
Question: Tell me about a team project that went sideways. What happened, what was your role in it, and what would you do differently?
What to listen for: Do they own any part of the failure, or does the whole story blame the team? Candidates who describe a specific thing they would change next time are more coachable than ones who describe what everyone else should have done.
Emotional intelligence
Question: Tell me about a time a colleague’s behavior was affecting the team’s work. How did you handle it?
What to listen for: Did they address it directly or avoid it? Did they describe the other person’s experience, or only their own reaction? Strong EI shows up in how they frame the other person, not just what they decided to do.
Adaptability
Question: Tell me about a time a project’s scope or goal changed significantly after you had already started. What did you do in the first 48 hours?
What to listen for: Speed of re-planning and absence of drama. A candidate who immediately lists the three things they did to reorient shows adaptability. One who describes how frustrating it was and waited for clarity is telling you something different.
Conflict resolution
Question: Tell me about a disagreement you had with a colleague or manager where you both had legitimate points. How did it resolve?
What to listen for: Did they stay with the problem or go to the person? Strong conflict resolution shows up as naming the specific disagreement, describing what the other side needed, and finding a workable outcome, not just “we talked it out.”
Pair any of these with the matching assessment from the Testlify test library to get a second signal that scores independently of how well someone interviews.
How do you assess interpersonal skills objectively?
You cannot reduce a person to a single number, but you can make the judgment far more consistent. The trick is to stop forming one overall impression and start scoring separate signals on the same scale. We use a simple four-part method, the Testlify Interpersonal Skills Scorecard, on every people-skill hire:
- Signal source. For each skill, pick where the evidence comes from: a structured interview answer, a test result, a work sample, or a reference. Name it before the call so you are not back-filling a story.
- Consistency across signals. Score each skill 1 to 5 from at least two independent sources. When the interview and the test disagree, that gap is the most useful thing on the page.
- Role-fit weighting. Weight each skill to the job. Conflict resolution carries more for a team lead; clear writing carries more for a remote analyst. Do not average everything equally.
- Red-flag check. Note any single hard no (talks over the interviewer, blames every past team) and decide up front whether it overrides a high average.
The backbone of all four is the structured interview: same questions, same rubric, every candidate. It is the cheapest upgrade you can make, and the research on structured versus unstructured interviews has been one-sided for years. Add a short skills assessment as the second signal and you have moved from opinion to evidence.
Pro tip: Score each skill right after the interview, before you debrief with anyone else. The first ten minutes of a group debrief is where one confident voice quietly rewrites everyone else’s notes.
What mistakes should you avoid when hiring for them?
The failure modes are predictable, and most of them come from trusting a feeling. Watch for these:
- Scoring charisma, not behavior. A warm, fluent talker is not the same as a strong collaborator. Charm is easy to feel and easy to overweight, so anchor on what they did, not how they made you feel.
- No rubric. Without a fixed scale, two interviewers score the same answer differently and the loudest opinion wins. Write the rubric before you meet anyone.
- Testing skills the role does not need. A solo research role does not need elite group facilitation. Match the skills you weight to the actual job, or you will reject good people for the wrong reasons.
- One signal only. A single interview is a small sample on a noisy day. Two signals that agree are worth more than one that felt great.
Key takeaway: Interpersonal skills are real and assessable, but only if you measure behavior from more than one angle and score it on a fixed scale. The moment it turns into “I just had a good feeling,” you are back to guessing.
Hire for interpersonal skills with Testlify
Pick the two or three interpersonal skills that decide success in the role, give each candidate the same structured interview plus a matching assessment, and score every signal 1 to 5 before you debrief. Picture a 500-person company hiring 20 people a quarter: scoring soft skills before the first call can turn a six-week screening loop into about 12 days, because the shortlist is already ranked on evidence. Browse the Testlify test library to build that assessment, start free with a sample test today, or book a demo to see how teams score interpersonal skills at scale.
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