Redrock Study (numerical & data synthesis)
A 400-word brief plus 2-4 math-heavy questions and chart selection · 35 minutes (isolated block)
What it tests. Data filtration, calculation under time pressure, identifying causal relationships and distinguishing critical variables from noise.
Worked example. From the research journal, project a Year-3 elk population: baseline 1,200, 15% birth rate, 8% compounding mortality and +50 migration a year, applying P(t+1) = P(t) x 1.07 + 50 to reach about 1,631.
Common traps. The information-overload trap (reading every non-movable background sentence) and failing to sanity-check sample sizes or units (thousands versus absolute).
How to handle it. Isolate the case objective before touching the questions; keep a two-column sheet of Known Variables and Required Formulae, and collect only data blocks that fit your formula.
Sea Wolf (logical & constraint optimisation)
3 sites, each requiring a final combination of exactly 3 microbes · About 30 minutes (10 minutes per site)
What it tests. Resource allocation, constraint satisfaction, inductive pattern matching and multi-variable optimisation under pressure.
Worked example. With a £20,000 budget, a 45-unit toxicity ceiling and an averaged salinity score of 6.0-7.0, the combination A+B+C (£19,000, 45 toxicity, 6.5 average) complies while B+C+D busts the budget.
Common traps. The local-optimisation trap (20 minutes perfecting Site 1, starving Sites 2-3) and confusing an averaged constraint with an additive sum.
How to handle it. Allocate exactly 10 minutes per site, choose filters that eliminate the most options instantly, and work by systematic elimination: banned traits first, then cost, then averaging.
Sustainable Futures Lab (situational judgement & leadership)
A series of unfolding project-phase decisions · 20 minutes
What it tests. Scenario assessment, stakeholder negotiation, risk management and alignment with consulting-readiness behaviours.
Worked example. Facing an industrial alliance objecting to habitat boundaries that data says are essential, the best option is an urgent alignment meeting proposing a collaborative sub-zoning compromise, not adversarial enforcement, delay or capitulation.
Common traps. Selecting the extreme option (mistaking aggression for leadership or passivity for collaboration) and inconsistent decision logic across questions.
How to handle it. Decide as a McKinsey Engagement Manager would: data-driven outcomes, transparent stakeholder communication and structured efficiency, never intuition that ignores team input.