FENZ General Ability Screen common mistakes
FENZ General Ability Screen · Understand the traps and how to avoid them.
Treating the verbal passage as a memory test and answering from general knowledge of firefighting or emergency services instead of from the words actually printed, so a plausible-sounding option is chosen over the one the passage supports.
Candidates with operational background read the topic, feel confident, and stop checking the text; the screen deliberately uses familiar-sounding topics to tempt outside knowledge.
What to do instead
Force yourself to point to the exact sentence that supports your answer before selecting. If you cannot locate it, eliminate the option. Practise with passages on subjects you know well and mark every answer as 'in text' or 'not in text'.
Answering 'true', 'false' or 'cannot say' by judging whether the statement is factually true in the real world rather than whether the passage proves it, so 'cannot say' is almost never chosen.
'Cannot say' feels like an admission of failure, and real-world plausibility pulls candidates toward true or false.
What to do instead
Apply a fixed test: does the passage state it, contradict it, or stay silent? Only the third case gets 'cannot say'. Drill sets where roughly a third of items are 'cannot say' so the option stops feeling unnatural.
Reading the question stem after the passage, then re-reading the whole passage to find the answer, which burns the time budget and leaves later numerical items unattempted.
School habit of reading text first; the screen is timed per section and passages are longer than they need to be.
What to do instead
Read the question stem first, then scan for the keyword or name it mentions. Practise under a timer with a hard rule of one pass per passage and no full re-reads.
Working percentages, ratios and rate problems by feel and choosing the answer that looks about right, without writing the intermediate step, so near-miss distractors are selected.
The distractors are built from predictable slips (forgetting to convert units, applying the percentage to the wrong base), and mental arithmetic under time pressure produces exactly those slips.
What to do instead
Write one line of setup before calculating and check the base of every percentage. For fireground-style rates (flow, tank duration, travel time), write the units and cancel them; if units do not cancel to the target, the setup is wrong.
Spending several minutes on one multi-step numerical item to protect a perfect score, then rushing the last third of the section and guessing.
Perfectionism plus the fact that early items often look easier, so a stuck item feels like it should crack soon.
What to do instead
Set a per-item ceiling (for example 90 seconds). On hitting it, mark, guess, move on, and return only if time remains. Every item is worth the same, so a slow correct answer costs more than a fast guess plus two later attempts.
Assuming a sequence continues by the rule that fits the first three terms, without testing it on the fourth and fifth, so an alternative rule that also fits the early terms is missed.
The first plausible pattern produces an 'aha' feeling that suppresses verification; abstract sequences are often designed with a decoy early pattern.
What to do instead
Always confirm the candidate rule against every given term before answering, and check the answer options for a second sequence that also fits. If two rules fit, the intended one is the one that explains all terms.
Rotating or flipping a shape in the head and losing track of orientation, then picking a mirror image as a rotation, or vice versa.
Mental rotation is error-prone without an anchor, and mirrored options are deliberately included because they look almost identical.
What to do instead
Track one distinctive feature (a notch, a dot, a short edge) through the transformation rather than the whole outline, and state aloud whether the operation preserves or reverses handedness. Rotations preserve it; reflections reverse it.
Answering situational judgement items with what a confident, decisive individual would do rather than what the policy, chain of command and safety of the crew require, choosing the boldest option.
Candidates conflate leadership with decisiveness, and the screen scores against a professional standard that values escalation, documentation and crew safety over personal initiative.
What to do instead
Rank options by three filters in order: immediate safety, correct procedure and reporting line, then team and public impact. The best option is usually the one that acts safely and escalates appropriately, not the one that acts alone and dramatically.
Ignoring the instruction to rank or rate every option and only marking the one 'best' response, leaving other rows blank or duplicated.
Multiple-choice habit; judgement items often ask for a most and a least effective response, or a rating for each option, and partial answers score zero.
What to do instead
Before answering, underline the response format in the stem (most/least, rank all, rate each). After choosing, re-read the stem to confirm you have produced exactly that many judgements and that no two options share the same rank where ranking is required.
Reasoning about a lever, pulley or gear system by intuition about 'more force' without identifying the pivot, the effort arm and the load arm, so a longer spanner or a larger pulley is judged to need more effort.
Everyday pushing and lifting feels effort-proportional, which contradicts the moment and ratio relationships the items test.
What to do instead
For every mechanical item, sketch the pivot and label distances before answering, then apply the moment balance or the gear/pulley ratio explicitly. For gears, count teeth and remember the smaller wheel turns faster with less torque.