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Thought process for building structures

case structure Forming structure Structure
New answer on Apr 02, 2022
5 Answers
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Anonymous A asked on Apr 01, 2022

Hi Experts! 
 

I am working on improving my structuring and really keen to understand the thought process that you follow when you are building structures. I know this will be different for different people, but would be great to get a view of thought process you have in your head.

Overview of answers

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Matteo
Expert
replied on Apr 01, 2022
McKinsey & Company | Currently offering 1 free coaching session| Happy to PARTNER with you to get an offer from MBB

Hello, 

thanks a lot for the question. :) It is a really interesting one.

I would split between structure at the beginning of the case and through the whole case:  

Beginning of the case

I can share with you my approach, made up of the following  4 main steps

1) Understand precisely the objective of the case → It is fundamental to really catch what the interviewer is looking for ( e.g., 1 or more objectives, numerical targets, time horizon) 

2) State a clear hypothesis aloud → The initial preliminary hypothesis is a potential answer looking to solve the business case. You would like to test it and eventually refine it through the business case solution

3) Build the issue tree → a) Think about the piece of information that are relevant in order to test your initial hypothesis (how they will impact on your initial ideas? If there is no impact that information is not relevant) b) Organise them in clear buckets MECE (Mutually Exclusive, Collectively Exhaustive) c) Draw a clear structure on your paper with at the centre your hypothesis and all different buckets coming from that one d) Make sure the whole structure is synthetic and easy to communicate e) Drive the interviewer through the structure, involving him

4) Use process of elimination in order to refine the initial hypothesis → Ask to the interviewer the piece of information you need in an ordered way, starting from the most important bucket 

I cannot stress enough to focus on building issue tree and not simply attach framework already built in order to test an hypothesis. Framework should be used as starting points but then they must be tailored to the specific case. 

During the whole interview (business case and fit) 

The previous approach is useful to create the structure at the beginning of the case, however the ideal candidate should be structured through the all business case. The 4 core secrets for doing this is are the following: 

  • Top down approach (i.e., go from general to details)
  • Coherence
  • MECE
  • Synthesis

To conclude, I would suggest to be structured and synthetic not only during the business case but also in the motivational part. It really makes the whole difference. 

Do not hesitate to reach out me in case of further questions! I am currently offering a free coaching session.  

Good luck!

Matteo

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Ian
Expert
Content Creator
replied on Apr 02, 2022
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate

Hi there,

Framework Overview

If there's anything to remember in this process, it's that cases don't exist just because. They have come about because of a real need to simulate the world you will be in when you are hopefully hired. As such, remember that they are a simplified version of what we do, and they test you in those areas.

 

As such, remember that a framework is a guide, not a mandate. In the real-world, we do not go into a client and say "right, we have a framework that says we need to look at x, y, and z and that's exactly what we're going to do". Rather, we come in with a view, a hypothesis, a plan of attack. The moment this view is created, it's wrong! Same with your framework. The point is that it gives us and you a starting point. We can say "right, part 1 of framework is around this. Let's dig around and see if it helps us get to the answer". If it does, great, we go further (but specific elements of it will certainly be wrong). If it doesn't, we move on.

Objective-Driven Frameworks

Your framework is your structure for approaching the problem. It consits of a few main areas you'd like to look at. Inherent in your framework is a view that "If I answer A, B, and C, then we have an answer"

 

So, for market entry:

 

1) If the market is big, and it's growing, then we still want to considering entering

 

2) If #1 = yes, then let's see if it's attractive...can we win there? Is our product good/better than our competition's? Etc. If yes, let's definitely consider entering.

 

3) If #1 and #2 = yes, then, when we do enter, are we sure we can win? I.e. do we have the right plans. Will implementation actually pan out? Do we have the expertise, capital, etc.? In other words, if #2 is the thearectical, #3 is the reality.

 

Then, your summary becomes "I believe we should enter the market, if we can prove it's a good market, the it's attractive to us specifically, and that we will win it".

 

^Now this is a hypothesis/structure :)

 

Read these 2 Q&As for some great context + discussion:

 

https://www.preplounge.com/en/consulting-forum/interviewer-led-case-interview-hyposthesis-and-ideas-7390

 

https://www.preplounge.com/en/consulting-forum/forming-a-hypothesis-case-in-point-vs-victor-cheng-7311

 

Hope this helps! This is a tricky topic that's difficult to properly answer in writting...if you want a more thorough explanation, and training in the mindset shift required here, don't hesitate

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Moritz
Expert
Content Creator
replied on Apr 02, 2022
ex-McKinsey EM & Interviewer | 7/8 offer rate for 4+ sessions | 90min sessions with FREE exercises & videos

Hi there,

Some good answers already so let me complement with an important distinction between frameworks, namely those organizing “areas of analyses” and other organizing “specific ideas”. Candidates very often get this super wrong!

  • Areas of analyses: If there's an overall objective in the case prompt, and you have not much background information yet, your structure serves as a guide that organizes area of analyses. This means a list of things you'd like to explore in the next 30 min in order to better understand the problem and subsequently devise a solution. You need to be pragmatic and have a hypothesis as to what the top areas to look into should be, because you can't “boil the ocean” and analyze everything in 30 min. In this case, your structure is the roadmap for the interview and every end-point of your MECE structure is an area you'd like to investigate going forward.
  • Specific ideas: Alternatively, you may be asked for a structure to provide some ideas. At McKinsey for example, the first question is often a version of “What do you think are some of the factors affecting [something specific relating to the prompt]. In this case, you shouldn't create a framework to organize areas you'd like to explore. Instead, you should give very specific examples of whatever was asked e.g. factors, ideas, reasons, etc. For example, if profit is down in an airline, don't just create a revenue bucket and say you want to look at price and number of tickets sold. Those are not ideas! Those are areas of analyses! A much better answer would include a long list of detailed reasons as to why either revenue was too low or costs too high. In this case, every end-point of your MECE issue tree is an idea, which is ultimately a mini-hypothesis at the most granular level.

Hope this helps a bit! Best of luck!

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Charlotte
Expert
replied on Apr 02, 2022
Empathic coach, former McKinsey Engagement Manager |Secure offers from top consulting firms

Dear candidate,

 

try this:

a) structure conceptually by the actual underlying drivers (your potential answers)

b) structure by business process

c) structure by business segment

d) structure algebraically

 

These are easy ways to come up with structures only the first one is tricky, and if you stall in an interview try any of these to get you going. best regards

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Maikol
Expert
Content Creator
replied on Apr 01, 2022
BCG Project Leader | Former Bain, AlixPartner, and PE | INSEAD MBA | GMAT 780

The simplest way to structure things is to think backward from the end.

Start from what you want to achieve, then identify obstacles between you and what you want to achieve.

List the obstacles, and then ensure this list is MECE and “answer first”.

If you want to know more, just schedule a session with me.

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Matteo gave the best answer

Matteo

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