AOSB Aptitude common mistakes
AOSB Aptitude · Understand the traps and how to avoid them.
Spending a fixed amount of time on every verbal reasoning item, so a long passage with five questions eats the clock while short synonym/antonym items go unanswered.
Candidates treat the paper as uniform and don't triage; under time pressure they default to working front-to-back at a steady pace.
What to do instead
Before starting, scan the section and answer short standalone items first, banking marks quickly; cap time per passage (e.g. read once, answer, move on) and leave any item needing a third re-read.
Answering verbal items from general knowledge or personal opinion rather than from what the passage actually states.
Familiar topics trigger assumptions; candidates import outside facts and pick the 'true in real life' option instead of the 'true according to the text' option.
What to do instead
For each option, point to the exact words in the passage that support or contradict it; if you can't locate the line, reject the option. Treat 'true but not stated' as wrong.
Rushing numerical items without estimating first, then losing time on long division and arriving at answers outside the plausible range.
Anxiety about time pushes candidates straight into exact calculation; they also misread units (km vs m, per hour vs per day).
What to do instead
Estimate the answer to one significant figure before calculating, check the units in the question stem, and use the answer options to eliminate implausible values rather than computing precisely.
Losing track of multi-step ratio, percentage-change and rate problems by doing arithmetic in the head and dropping an intermediate step.
Working memory is overloaded under exam pressure; candidates chain operations mentally and skip the 'of what base' question.
What to do instead
Write every step, label each intermediate figure with its unit and what it represents, and restate the final question before selecting an answer.
Guessing on abstract/spatial items after staring at a sequence for over a minute without a systematic check of rotation, reflection and element-count rules.
Candidates search for a single 'trick' rather than running a checklist, and panic when the pattern isn't immediately visible.
What to do instead
Apply a fixed checklist to every sequence: number of elements, position, orientation, shading, size, and presence/absence of features; timebox to 60-90 seconds then move on and return.
Failing to distinguish a rotation from a mirror image when manipulating 3D shapes or folded nets, leading to confident but wrong selections.
Under time pressure candidates match overall shape and ignore chirality (handedness) and the orientation of asymmetric details.
What to do instead
Track one asymmetric feature (a notch, a letter, a shaded corner) through the transformation; physically rotate your hand or the page to test whether the option is a true rotation or a reflection.
Building a plan or schedule without first listing hard constraints (fixed appointments, travel times, dependencies), then discovering mid-answer that it cannot work.
Candidates start arranging items to look tidy rather than extracting the rules the scenario imposes.
What to do instead
Before scheduling, write out every constraint and dependency explicitly, identify the fixed points, then fill gaps around them and test the finished plan against each constraint.
In group exercises, either dominating the discussion or staying silent, rather than contributing ideas and actively bringing others in.
Candidates believe leadership means talking most, or fear saying something wrong; both read as poor team behaviour to assessors.
What to do instead
Aim to make a few clear, relevant contributions, summarise the group's progress at intervals, invite a quiet member by name, and help the group reach a decision within time.
Treating practical command tasks as a solo problem, grabbing the equipment and issuing orders without confirming the team understood the plan or checking safety.
Adrenaline and the desire to look decisive lead candidates to skip briefing and risk assessment.
What to do instead
Use a short, audible brief: state the objective, allocate roles by name, confirm understanding with a question, do a quick safety check, then supervise and adjust rather than doing the task yourself.
Giving rehearsed, generic answers in the interview ('I'm a natural leader') with no concrete examples, and becoming defensive when asked about a weakness or failure.
Candidates prepare slogans rather than evidence, and treat probing questions as attacks rather than chances to show self-awareness.
What to do instead
Prepare five or six specific STAR examples (situation, task, action, result) covering teamwork, leadership, setback and motivation; answer weakness questions with a real example plus what you changed afterwards.