KS POST study materials
KS POST study resources

KS POST cheat sheet

KS POST · Keep the key ideas within reach.

Quick reference

Reading Comprehension

  • Main idea = the claim the whole passage supports; a detail supports only one paragraph and cannot serve as the main idea.

  • Passage order rule: answers to 'according to the passage' questions must be defensible from stated text, not from outside knowledge.

  • Inference limits: a valid inference is forced by the text; if two or more explanations fit equally, the choice is unsupported.

  • Tone words: 'critical', 'neutral', 'advocating' describe the author's stance toward the subject, not the subject's own mood.

  • Scope traps: choices using 'all', 'never', 'only', or 'must' are wrong unless the passage states them absolutely.

  • Cause vs. correlation: if the passage says two events coincided, an answer claiming one caused the other is incorrect.

  • Vocabulary in context: substitute each option into the sentence and keep the one preserving the sentence's logic and tone.

  • Comparison passages: track which author holds which view; a common trap attributes Author A's claim to Author B.

  • Sequence questions: locate the earliest and latest event in the text first, then order the middle items against those anchors.

Quick reference

Writing and Grammar

  • Subject-verb agreement ignores prepositional phrases: 'The box of files (is/are)' takes 'is' because the subject is 'box'.

  • Compound subjects joined by 'and' take a plural verb; joined by 'or'/'nor', the verb agrees with the nearer subject.

  • Pronoun case: after 'between', 'with', and prepositions, use object pronouns (me, him, her, them).

  • Dangling modifier test: the noun right after an introductory phrase must be the entity performing the action.

  • Comma splice fix: two independent clauses need a period, semicolon, or comma plus coordinating conjunction (FANBOYS).

  • Restrictive clauses take 'that' with no commas; nonrestrictive clauses take 'which' set off by commas.

  • Parallelism: items in a list or after 'and' must share grammatical form (all nouns, all gerunds, all infinitives).

  • Active voice preferred in reports: actor first, action second; passive only when the actor is unknown or irrelevant.

  • Fewer counts items, less counts mass; between covers two entities, among covers three or more.

Quick reference

Mathematics

  • Percent change = (new - old) / old x 100; a 20% rise then 20% fall yields 96% of the original, not 100%.

  • Distance = rate x time; for combined travel, add rates for opposite directions and subtract for same-direction pursuit.

  • Average (mean) = sum / count; if the mean of n items is m, the total is n x m.

  • Ratios: set up a proportion a/b = c/d and cross-multiply; scale all parts by the same factor.

  • Area of a circle = pi r^2; circumference = 2 pi r; area of a triangle = 1/2 base x height.

  • Pythagorean theorem a^2 + b^2 = c^2 applies only to right triangles; c is the hypotenuse.

  • Work problems: combined rate = 1/a + 1/b; time together = 1 / (combined rate).

  • Probability of independent events = product of individual probabilities; 'at least one' = 1 minus probability of none.

  • Unit conversion: multiply by fractions equal to 1 arranged so unwanted units cancel diagonally.

Quick reference

Observation and Memory

  • Encoding specificity: recall is best when the retrieval context matches the encoding context.

  • Serial position effect: first (primacy) and last (recency) items in a list are remembered best; middle items are weakest.

  • Change blindness: a person can miss large scene changes when attention is elsewhere or a brief interruption occurs.

  • Weapon focus: attention narrows toward a threatening object, reducing recall of the person's face and clothing.

  • Estimating time intervals is unreliable under stress; elapsed-time estimates tend to compress during high arousal.

  • Cross-race effect: faces of one's own racial group are generally recognized more accurately than other-group faces.

  • Confidence and accuracy are not the same; high confidence in an eyewitness does not guarantee correct identification.

  • Description order for a person: sex, age, height, build, hair, eyes, complexion, clothing, distinguishing marks.

  • Memory decay: detail loss is fastest early; periodic review at increasing intervals slows forgetting.

Quick reference

Situational Judgment and Human Relations

  • Escalation rule: use the least intrusive intervention that resolves the issue, then document and escalate if it recurs.

  • De-escalation sequence: calm tone, reduce audience, create distance, offer choices, then act if compliance fails.

  • Supervisor notification is required for use-of-force, injury, arrest, or any incident likely to draw a complaint.

  • Conflict style: collaborating suits shared goals; accommodating suits trivial issues; avoiding suits trivial or cooling-off periods.

  • Active listening: paraphrase the speaker's content and reflect feeling before responding with your own position.

  • Bias check: judge conduct against the written rule, not against the person's manner, appearance, or prior history.

  • When a colleague breaks policy, the first step is direct private correction; if it continues, report up the chain.

  • Confidentiality: share information only with those who have an operational need to know.

  • Documentation timing: record facts as soon as practicable; delay degrades detail and invites challenges to accuracy.

Quick reference

Report Writing

  • Report structure: who, what, when, where, how, and what action was taken, in chronological order.

  • Use first person past tense for actions taken ('I observed', 'I advised') and keep tense consistent throughout.

  • Quote speech verbatim inside quotation marks; paraphrase without quotes and attribute it ('Smith stated that...').

  • Record exact times, locations, names, and badge or ID numbers; approximations must be labeled as approximate.

  • Omit conclusions about guilt or motive; state observed behavior and the facts that support any charge.

  • Neutral language: replace loaded terms ('went crazy', 'obviously drunk') with described conduct and observations.

  • Never alter a submitted report; corrections are made by dated, signed supplemental report.

  • Objectivity markers: attribute opinions to their source and separate what you saw from what you were told.

  • Completeness test: a reader with no prior knowledge should be able to reconstruct the event from the report alone.