Skill lessons

These lessons are our own writing. Each teaches one skill an aptitude test measures: what it is, what you learn to do, worked examples that show the right method and the tempting wrong one, practice tips and its terms.

SW Agent has every lesson's full text. Ask it, for example how to work out a reverse percentage or how to approach a diagram question, and it quotes the lesson with a link here.

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Learn a repeatable way to compare workplace responses: establish the facts, identify duties and risks, respect role boundaries, then choose a proportionate first action.

Practise management decisions that balance people, fairness, delivery, and accountability.

Learn to recover service without making promises outside your authority: acknowledge the impact, clarify the desired outcome, explain constraints plainly, take an authorized next step, and close the loop.

Practise recognizing hazards and choosing a safe, proportionate response: protect people, control immediate exposure, use the correct reporting path, and verify that the control is effective.

Learn to triage a busy inbox by impact, deadline, authority, and dependency, then turn that ranking into a realistic action plan with clear owners and follow-up.

Build a recommendation from several documents without blurring facts, interpretations, and assumptions.

Learn to build a feasible schedule from dependencies, resource limits, deadlines, and uncertainty.

Practise monitoring several information streams without treating every change as equally urgent.

Numerical reasoning is the ability to take a small set of supplied numbers (a price list, a staffing table, a fuel figure), and reach a defensible answer in around ninety seconds without a formula sheet.

Data interpretation is the discipline of getting a correct number out of a table, chart or dashboard that was not built to make your question easy, and of saying so when the data cannot answer it at all.

Error detection is the skill of holding a source and a copy side by side and finding the one character, digit or field that moved, and of knowing which errors a given check will and will not catch.

Clerical accuracy is the ability to handle a large volume of records correctly and consistently: filing them in the right order, coding them against a key, spotting duplicates that do not look like duplicates, and holding that standard on the two-hundredth record as well as the second.

Perceptual speed is how quickly you can decide whether two visual strings, symbols or records are the same, and how quickly you can find a target among visually similar distractors.

Processing speed is how fast you can carry out simple cognitive operations that each require a decision (substituting symbols for digits, adding two small numbers, judging which of two words comes later alphabetically) repeated many times under a clock.

Typing and keyboard skill is a measured, thresholded competence: an employer states a speed and an accuracy figure, and a short test decides whether you clear both.

Logical reasoning is the ability to take a set of statements (conditionals, quantifiers, ordering and grouping constraints), and work out exactly what they force, what they permit, and what they leave open.

Deductive reasoning is the disciplined application of rules you have been handed to a case you have been handed, stopping precisely where the rules run out.

Inductive reasoning is the ability to look at a handful of examples (a number series, a set of observations, a table of past decisions), and propose the rule that generated them, while staying honest about the fact that finished evidence never fully proves a rule.

Abstract reasoning is rule-finding stripped of language and content: you are given shapes, shading, counts and positions, and asked which rule generates them.

Diagrammatic reasoning is the ability to execute a diagram: to run an input through a chain of operator boxes, trace a flowchart with a real value, follow a state machine through a sequence of events, or read a dependency network and say what slips if a task runs late.

Problem solving is the construct that asks you to choose a method, not just execute one: to combine a table with a rule, decide whether an estimate settles the question or an exact calculation is needed, narrow a fault by halving the search space, and check the answer against the constraint that actually binds.

Spatial reasoning is the ability to turn an object in your head and be right about the result: to tell a rotation from a mirror image, fold a flat net into a solid and know which faces meet, read plan and elevation views back into a three-dimensional shape, and hold your own orientation steady while a route turns underneath you.

Verbal reasoning is the discipline of answering strictly from a passage: deciding whether a statement is True, False, or Cannot Say on the evidence given, and refusing to import anything you happen to know about the topic.

Reading comprehension is the ability to take a passage, a policy clause, a procedure or a technical note and answer accurately about what it says, what it means, and how it applies to a case in front of you.

Written communication is assessed in two quite different ways: multiple-choice sentence-correction and proofreading items that test whether you can name and fix a specific grammatical fault, and free-text exercises - an email, an incident note, a briefing - marked on structure, accuracy and tone.

Critical thinking assessments ask you to take an argument apart: what is being concluded, what it rests on, what evidence would settle it, and whether a proposed conclusion actually follows.

Coding and decoding items give you an artificial rule - shift every letter forward by three, replace each word with a nonsense token, code digits through a table with exceptions - and ask you to apply or reverse it, quickly and without slips.

Working memory is the small, fast, easily disrupted workspace you use to hold a few items while you do something to them: reversing a digit string, keeping a running total, tracking which rule is currently in force.

Learning and information retention is the skill of getting material in so that it comes back out later, under a cue you do not control.

Attention and concentration is the skill of still noticing on minute forty of a checking block as reliably as you did on minute two, and of pointing the noticing at the right thing when two things compete.

Reaction-time exercises measure how long the loop from stimulus to response takes, and how much longer it gets when a decision is inserted into that loop.

Mechanical comprehension is the ability to predict what a physical system will do (which way a gear turns, how hard you have to pull, how far the load actually rises) from forces, moments and the simple machines, rather than from a memorised formula sheet.

Electrical reasoning is the ability to move confidently between volts, amps, ohms and watts on a circuit you can only see as a diagram, and to say what a fault would look like on a meter before you pick one up.

Technical reasoning is what sits above any single trade: reading a system diagram for what it actually does, isolating a fault by measurement instead of by guesswork, and taking the governing number off a drawing or a nameplate without importing assumptions.

Map and route reasoning is spatial thinking with a clock attached: bearings and turns, map scale, grid references, and the journey-time arithmetic that decides whether a route is feasible at all.