Английская Википедия:Issue tree
Шаблон:Distinguish Шаблон:Redirect
Шаблон:InfoMaps An issue tree, also called logic tree, is a graphical breakdown of a question that dissects it into its different components vertically and that progresses into details as it reads to the right.[1]Шаблон:Rp
Issue trees are useful in problem solving to identify the root causes of a problem as well as to identify its potential solutions. They also provide a reference point to see how each piece fits into the whole picture of a problem.[2]
Types
According to professor of strategy Arnaud Chevallier, elaborating an approach used at McKinsey & Company,[3] there are two types of issue trees: diagnostic ones and solution ones.[4] Diagnostic trees break down a "why" key question, identifying all the possible root causes for the problem. Solution trees break down a "how" key question, identifying all the possible alternatives to fix the problem.[5]
Rules
Four basic rules can help ensure that issue trees are optimal, according to Chevallier:[4]
- Consistently answer a "why" or a "how" question
- Progress from the key question to the analysis as it moves to the right
- Have branches that are mutually exclusive and collectively exhaustive (MECE)
- Use an insightful breakdown
The requirement for issue trees to be collectively exhaustive implies that divergent thinking is a critical skill.[6]
Applications
In management interviews
Issue trees are used to answer questions in case interviews for management consulting positions.[7] A quantitative type of question, the market sizing question, requires the interviewee to estimate the size of a data group such as a specific segment of a population, an amount of objects, a company's revenues, or similar.[8] The candidates are expected to use a structured and logical method of arriving at their answer, and using an issue tree provides a diagram to aid the candidate's logical reasoning. Issue trees are used for other types of case interview questions as well.[7]
See also
- Fault tree analysis
- Five whys
- Horizon scanning
- Ishikawa diagram
- Root cause analysis
- Why–because analysis
References
Further reading
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite web Also available in PDF format.
- ↑ Chevallier's writings (such as Шаблон:Harvnb and Шаблон:Harvnb) cite an earlier McKinsey publication that discusses issue maps among other problem-solving techniques: Шаблон:Cite tech report Other earlier McKinsey-related publications discuss issue trees too, such as: Шаблон:Cite book
- ↑ 4,0 4,1 Шаблон:Cite web See also: Шаблон:Cite web
- ↑ See also the how–why diagrams in: Шаблон:Cite book
- ↑ Шаблон:Cite web
- ↑ 7,0 7,1 Шаблон:Cite book
- ↑ Шаблон:Cite web
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