OEA Admission Exam common mistakes
OEA Admission Exam · Understand the traps and how to avoid them.
Spending a fixed amount of time on every quantitative item instead of triaging, so a single lengthy calculation consumes the minutes needed for several easier items later in the section.
Candidates treat each question as equally weighted and feel committed to finishing what they started, which triggers loss aversion and sunk-cost thinking under time pressure.
What to do instead
Before starting, scan the section and mark items as quick, medium, or long. Give each item a personal time cap (for example 90 seconds); when the cap hits, mark a plausible answer, flag the item, and move on. Return only after all quick items are answered.
Computing an exact value when the answer choices are far apart, or estimating when the choices are close together, without first checking the spread of the options.
Candidates apply a single habitual strategy (always exact, or always estimate) rather than letting the answer choices dictate the required precision.
What to do instead
Read the answer choices before calculating. If they are widely separated, round inputs to convenient numbers and estimate. If they are close, calculate exactly or use the last digit or magnitude to discriminate.
Reading the question stem once, then answering from memory of the passage or chart without returning to verify the specific figure, unit, or qualifier the question asks about.
Familiarity with the topic creates a feeling of understanding that substitutes for locating the exact evidence, and working memory drops details under time pressure.
What to do instead
For every item, locate and underline the exact sentence, row, or label that supports the answer before selecting it. Confirm units, time period, and whether the question asks for a value, a percentage, or a change.
Choosing an answer that is true according to the passage but does not answer the question asked, such as picking a supporting detail when the stem asks for the main conclusion.
Candidates match on content words rather than on the logical role the answer must play, so any true-sounding statement feels acceptable.
What to do instead
Paraphrase the stem into a precise task (for example 'the author's overall claim is...') and test each option against that task. Eliminate options that are accurate but off-task.
Treating 'some', 'most', 'all', 'unless', and 'only if' as interchangeable, leading to invalid deductions from conditional statements.
Everyday speech uses these quantifiers loosely, and candidates import that looseness into formal reasoning where the logical meaning is strict.
What to do instead
Rewrite each conditional in if-then form and note its contrapositive. Draw a quick diagram of set relationships for quantifier statements. Reject any conclusion that reverses a conditional or upgrades 'some' to 'all'.
Solving an ordering or grouping puzzle by holding all constraints in memory and testing arrangements mentally, then losing track of which constraints have been applied.
Working memory is limited, and verbal puzzles feel manageable until three or more constraints interact, at which point unchecked assumptions creep in.
What to do instead
Externalize the setup: draw slots or a grid, list numbered constraints, and tick each one off as you apply it. Test each answer choice against every constraint rather than reasoning from a partial model.
Writing sentences in which the grammatical subject does not match the intended actor, or in which a modifier attaches to the wrong noun, so the meaning shifts even though the sentence sounds fluent.
Candidates edit by ear for surface fluency and do not check the logical relationship between subject, verb, and modifier.
What to do instead
Before finalizing a sentence, identify the actor and the action and confirm they are the grammatical subject and verb. Move any introductory phrase next to the noun it describes and reread the sentence in isolation.
Using a semicolon, colon, or comma to join clauses without checking whether each side is an independent clause, producing run-ons or fragments.
Punctuation is learned by imitation rather than rule, and longer sentences feel more formal, so candidates add punctuation where structure does not support it.
What to do instead
Apply a fixed test: a semicolon and a colon (when introducing an explanation or list) must be preceded by a complete sentence; a comma alone cannot join two independent clauses. Split long sentences and verify each part stands alone.
Answering general knowledge items from a vague association with a name or event rather than from a specific verifiable fact, and not flagging the uncertainty.
Recognition feels like knowledge; a familiar-sounding option produces false confidence, and candidates dislike leaving items blank.
What to do instead
State to yourself the specific fact that would make an option correct (date, office, definition). If you cannot produce it, mark the item for review and return later rather than committing on familiarity alone.
Jumping to arithmetic on a multi-step word problem before identifying the target quantity and the given relationships, then solving for an intermediate value and selecting it as the answer.
Numbers in the stem cue immediate calculation, and the intermediate result appears among the answer choices as a deliberate trap.
What to do instead
Restate the goal in one sentence and list the given quantities with units before calculating. After computing, ask whether the result answers the stated goal or an intermediate step, and check it against the answer choices for a plausible trap.