The process took 1 week. I interviewed at McKinsey & Company (Washington, DC) in Sept 2007
Interview
The interview process is rigorous but smooth. Recruiters are extremely attentive and friendly, and interviews consist of a case and a personal interview - usually 2 in the first round with manager-level interviewers and 3 in the second round with partner-level interviewers. Each interview consists of a case and a personal experience segment.
Recruiter screen followed by series of case and behavioral (PEI) interviews. Cases are hypothetical client problems where you are asked to create a structure to break down the problem and then analyze data, graph, numbers, often requiring mental math to generate hypotheses and develop a recommendation.
In depth casing with multiple people over the course a few rounds. Masterthecase.com is good prep or the book by Victor Chang. There's also a personal aspect called the PEI interview that is very time in depth.
Interview questions [1]
Question 1
How would you increase the revenue of a fashion store?
I interviewed at McKinsey & Company (Washington, DC)
Interview
The first round interview included both a behavioral question and a case. The final round interviews involved three interviews, all three with both behavioral and case. The interviewers tended to be really nice.
Interview questions [1]
Question 1
Tell me about a time you handled a tough situation.