DSS Special Agent Test cheat sheet

Priority order for judgment calls: protect life and safety, then comply with law and policy, then accomplish the mission, then minimize cost and delay.

Escalate to a supervisor when a decision exceeds delegated authority, creates a conflict between policies, or carries irreversible, high-impact consequences.

Least-intrusive-means rule: among lawful options, choose the one that achieves the objective with the smallest infringement on privacy, liberty, or property.

Conflict of interest: disclose any personal, financial, or family interest in a matter and recuse before taking any action.

Document decisions contemporaneously with facts, options considered, rationale, and time; memory decays and records are discoverable.

Integrity test: an action that could not be defended if fully disclosed to the public is not permissible.

Gather facts before acting; separate direct observation from inference and label speculation explicitly as speculation.

Report misconduct through the chain of command; if the chain is implicated, use the inspector general or ombudsman channel.

Active voice places the actor before the action ('The agent filed the report'), which shortens sentences and fixes responsibility.

Subject-verb agreement ignores prepositional phrases between subject and verb: 'the list of names is', not 'are'.

Parallel structure requires items in a series to share grammatical form, such as all nouns or all gerunds.

A dangling modifier occurs when an introductory phrase does not modify the sentence's actual subject.

Nominalization turns a verb into a noun ('make a decision' for 'decide') and adds words while weakening the verb.

Each pronoun (it, they, this) needs exactly one unambiguous antecedent within the sentence or the preceding sentence.

Keep past events in past tense; use past perfect only for the earlier of two past events.

Cut redundancy ('advance planning', 'free gift') and empty qualifiers ('very', 'basically') to raise information density.

Valid means the conclusion follows from the premises; sound means valid plus every premise is actually true.

Contrapositive is logically equivalent: 'If P then Q' equals 'If not Q then not P'.

The converse ('If Q then P') and the inverse ('If not P then not Q') are not equivalent to the original conditional.

Q is a necessary condition for P if P cannot occur without Q; P is sufficient for Q if P guarantees Q.

Correlation does not establish causation; test for confounders, reverse causation, and selection effects.

Base-rate neglect: a highly accurate test can still yield mostly false positives when the condition is rare.

Negating a quantifier: 'not all A are B' means 'some A are not B', not 'no A are B'.

Test syllogism validity by counterexample: imagine the premises true and the conclusion false; if that is coherent, the argument is invalid.

Percent change = (new − old) / old × 100; a 20% decrease followed by a 25% increase returns to the original value.

Percentage points differ from percent: 10% to 13% is 3 percentage points but a 30% relative increase.

Weighted average = Σ(value × weight) / Σ(weights); use it whenever group sizes differ.

Rate = distance / time; combined work rate adds individual rates, so time together = 1 ÷ (1/a + 1/b).

For independent events, both occurring = product of probabilities; either occurring = sum minus the overlap.

The mean is pulled by outliers; the median is the middle ordered value and resists extreme scores.

Read axes, units, and base year before comparing charts; a truncated y-axis visually exaggerates differences.

A sample supports conclusions only about the population it represents; self-selected samples bias results.

Working memory holds roughly 7±2 items; chunking raises the effective capacity of that span.

Spaced rehearsal across intervals produces better long-term retention than massed repetition in one session.

Serial position effect: first and last items of a list are recalled best, so middle items need extra review.

Similar material learned close together (names, numbers, codes) creates interference; separate it in time.

Transposition errors (1234 written as 1243) are the most common transcription slip; verify digit by digit.

Proofread in separate passes: one for content, one for numbers and proper nouns, one for spelling.

Recognition is easier than free recall; matching a face, plate, or name against options is more reliable than generating it.