How personal/professional should McK PEI responses be?

Hi,

I would pick each story on how recent it is and how real your own role in it was, and I would run two tests before locking them in.

1) Seniority. With limited professional experience, academic or personal examples are fully justified. With 2 or more years of work behind you, a personal story invites the question of why there is no stronger recent professional example, and that doubt stays even when the story is compelling, so if an internship or a job covers similar ground, lead with that one.

2) Recency. A story from your bachelor's is fine if it was 1 or 2 years ago, while at 5 years or more recency works against you, because the interviewer wants to see who you are now.

The PEI is a drill-down, so pick the story you remember in detail rather than the most impressive one, and get someone to interrogate you on the follow-ups until you stop reaching for answers.

If you think an external pair of eyes could be of help to structure your preparation, feel free to reach out.

Best,

Franco

Use the story in which you were the person who decided, not the setting that sounds more impressive. For a BA round, a work story is usually easier to defend, because the interviewer can see other people, a constraint, and a result. A personal story is fine when your work examples are thin, or when you were only a junior pair of hands and the personal example is the one where you made the calls.

The PEI is a long probe of one story against one dimension. It is not a tour of your life. Pick the example that shows that dimension through what you did when someone pushed back, what you changed, and what happened afterwards. A memorable story that collapses under "what did you say next?" will lose to a plain project you can recount minute by minute.

If both versions survive a friend who keeps interrupting, keep the one that still makes sense after ten minutes. Whether it happened in an office is the smaller point.

I wouldn’t worry too much about whether the story comes from work or your personal life. I’d choose the example where you had a meaningful role and can really explain what happened.

Either way, the story needs to be personal in how you tell it. What were you thinking at the time? Why did you take that approach? Were you torn between two options? What did you find difficult?

The reactions of the people involved matter too. “I spoke to the team and got everyone on board” leaves out quite a lot! What were they concerned about? What did you actually say to them? Did anyone push back, and did that make you change your approach?

For example, “I realised my colleague wasn’t against the idea because she was worried her team would end up doing all the extra work” tells us something useful. You can then explain how you addressed that concern and whether her response was what you expected.

The right level of depth will probably feel like too much detail to you at first. You lived through the situation, so things that feel obvious to you aren’t obvious to the interviewer. That doesn’t mean giving them ten minutes of background; it means slowing down at the important moments and explaining your decisions, the other person’s response and what you did next.

That’s what can make a fairly ordinary work situation an interesting story. A more unusual personal experience won’t necessarily be stronger if it’s hard to explain your own decisions and contribution.

I’d shortlist examples from both, then see which ones you can discuss in that level of detail. 

Best,

Bogdan

Hey there :)

Having been a McKinsey interviewer myself, I’d say the most important thing is choosing a story that genuinely shows how you think, act and handle challenging situations. It really doesn’t matter whether it’s personal or professional. That said, professional examples are often easier to link to the competencies McKinsey is assessing, but a personal story can be just as strong if it demonstrates real impact and your individual contribution.

I’d focus on having a few stories you feel comfortable telling in detail, including the difficult moments, your decisions and what you learned. A very polished story can actually come across as rehearsed, so make sure it still feels authentic.

Best, Alessa :)

Hi there,

The big caveat here is I have not heard your stories, so I don't know!

Pick the story that is more powerful, took “more” from you, and had a big impact. You need to make sure that you maintain structure throughout, can dive deep into the story, and took multiple + impressive actions.

I wouldn't pick a work story just because it feels more applicable to consulting. If the personal story is genuinely stronger, use it.

By the way, it doesn't hurt to flesh out both stories!

For the PEI more broadly, take a look at my Behavioral Interview Course.

And honestly, nothing beats coaching here. Story selection is incredibly context dependent. A coach can actually hear the stories, challenge them, and tell you which one is stronger rather than trying to judge it from a Q&A.

Hi there,

I don't think the choice between professional and personal stories matters that much. What matters most is that the story is compelling, demonstrates the target dimension clearly, and is told in a thorough and engaging way.

I've seen both professional and personal stories work very well. The differentiator is usually not the setting, but how well the candidate explains the situation, their actions, the challenges they faced, and the impact they had. That's what tends to leave a lasting impression on the interviewer.

If you're unsure which stories to use, I'd recommend practicing them with a few people and gathering feedback. Often, others can quickly tell you which stories are more memorable, authentic, and easier to follow. The quality of the storytelling typically makes a much bigger difference than whether the story comes from work or your personal life.

Best,

Anna

Professional or academic settings should always be your baseline. Working within a company, startup, client project, or student initiative automatically provides the complex stakeholder dynamics, operational roadblocks, and business stakes that interviewers naturally look for.

When Personal Examples Work 

- A non-professional story works only when it reflects discipline, endurance, or strategic execution where direct parallels can be drawn to professional delivery.

- Examples: Preparing for an Ironman, leading an expedition, or managing a team.

What to Avoid

• Emotional or vulnerable narratives: Family challenges, relationship conflicts, or personal hardships do not evaluate consulting competencies and make the context awkward to assess objectively.
• Low-stakes achievements: Completing a routine hobby project or casual group activity does usually not satisfy the bar.

Hi there, 

I would aim for a mix, but ideally focusing on more professional situations. 

It matters a lot also that the story is recent and that it is as relevant as possible for the dimension. 

So rather think about the situations in the last 2-3 years when you were at your absolute best and then see which ones would match to the types of questions on McKinsey website. 

If you have any follow-up questions, don't hesitate to drop me a line. 

Best,
Cristian