MEGA MOGEA common mistakes
MEGA MOGEA · Understand the traps and how to avoid them.
Choosing an answer based on personal opinion or general world knowledge when the question asks what the passage says or implies, without going back to the lines that support the choice.
The items use familiar topics (education, technology, environment) that trigger strong prior beliefs, and answer choices are written to sound reasonable to someone reasoning from outside the text. Under time pressure, recognition feels like comprehension.
What to do instead
Before evaluating options, write a three-to-five-word paraphrase of the relevant sentence and note its line number. Eliminate any option you cannot point to a specific line for. On 'inference' items, require a two-step link: stated detail plus a logical step, both traceable to the passage.
Selecting a true statement instead of the statement that answers the question asked, e.g., picking a supporting detail on a main-idea item or a detail on an author's-purpose item.
Several distractors are factually accurate about the passage, so 'true' is mistaken for 'correct.' Test takers read the options before fully locking in what the stem is asking for.
What to do instead
Underline the stem's key term (main idea, purpose, tone, best summary) before reading options. Test each remaining option by asking 'Does this answer that specific question, or just describe the passage?' On summary items, reject options that cover only one paragraph.
Misjudging the author's attitude or tone by reacting to the emotional weight of the topic rather than to the qualifying language in the text ('although,' 'somewhat,' 'it would be premature to').
Tone words in options (critical, enthusiastic, cautious, neutral) overlap heavily, and a single strong word in the passage can dominate the reader's impression, pulling attention away from hedges and concessions.
What to do instead
Circle every concession, hedge, and contrast word in the passage and note which side of the contrast the author lands on. Choose the tone word only if you can replace it with a passage quotation that proves it; if the author presents multiple views without endorsing one, prefer 'objective/neutral' over a charged label.
Selecting the most formal-sounding option on sentence-correction items and missing the actual error, such as a subject-verb agreement break hidden behind long modifying phrases or an inverted structure.
Academic register is rewarded in writing, so polished vocabulary is mistaken for correctness. Long prepositional phrases between subject and verb make agreement errors hard to hear.
What to do instead
Strip each version to subject plus verb plus object and read only those words. Check for the four highest-frequency traps in order: subject-verb agreement, pronoun case/reference, parallel structure in a list, and misplaced modifiers at the start of a sentence.
Rewriting a sentence to improve it stylistically when the item only asks for the correction of a clear error, or avoiding the 'no change' option entirely because it feels like giving up.
Test takers carry the habit of producing better prose, and 'no change' feels like a non-answer. This produces over-editing and rejection of correct original sentences.
What to do instead
Apply a two-part rule: if the original version has no error in grammar, punctuation, or logic, 'no change' is the answer; style preferences are not errors. Before selecting an edit, state the specific rule it fixes out loud; if you cannot name the rule, keep the original.
On sentence-insertion or sentence-deletion items, judging whether the sentence is interesting or well-written instead of whether it serves the paragraph's stated focus and connects logically to the sentences on either side.
The sentences used are usually accurate and readable, so the decision feels like a quality judgment. Insertion items also require holding two adjacency relationships in mind at once, which working memory handles poorly under time limits.
What to do instead
For deletion, ask only: does the sentence support the paragraph's main point and is its content carried elsewhere? If it is on-topic and unique, keep it. For insertion, test the candidate position by reading the preceding and following sentences together with the new sentence and checking pronoun and transition continuity.
Setting up percent, ratio, and rate problems against the wrong base, such as computing a percentage of the final value instead of the original, or treating a percent increase and a percent decrease as canceling.
The wording 'increased by 20%, then decreased by 20%' invites a mental shortcut that ignores the changing base, and 'percent of' phrases in word problems bury the base in a subordinate clause.
What to do instead
Before calculating, write the equation in words: (percent) x (base) = part, and explicitly label which quantity is the base. For successive percent changes, convert to multipliers (1.20 x 0.80) rather than adding and subtracting percentages.
Selecting a distractor that matches an intermediate calculation, e.g., a partial product, a result that stops before the final step, or the number of a quantity the question asks for per unit.
Wrong answers are generated from the most common partial computations, so they appear on the screen the moment the test taker does the first operation. With no step written down, the partial result looks like the answer.
What to do instead
Estimate the answer to one significant figure before computing, and reject any option outside your estimate's range. Write each arithmetic step on scratch paper and check the final line against the units and against what the question actually asked for.
Using the right formula with the wrong measure in geometry and measurement items: radius substituted for diameter, circumference where area is required, or a linear scale factor applied once to an area or volume.
Formulas are recalled as shapes rather than as relationships, and diagrams are often not to scale, so an incorrect dimension looks plausible. Area and volume scale factors are the least intuitive relationship in the domain.
What to do instead
Label every dimension on the scratch diagram with its name before substituting, and write the formula with the variable names first. Remember that linear ratio k scales area by k-squared and volume by k-cubed; if the answer choices differ by a factor of 2, 3, 4, or 9, the item is testing exactly this.
Answering science items from everyday intuition instead of the governing principle, e.g., assuming heavier objects fall faster, that heat and temperature are the same, or that seasons result from distance to the Sun.
Everyday experience produces a coherent but wrong mental model, and distractors are deliberately written in the language of that model. The wrong answer feels more familiar than the correct one.
What to do instead
Before looking at the options, name the principle the item tests in one sentence (e.g., gravitational acceleration is independent of mass; seasons come from axial tilt). Then choose the option consistent with that principle, even if it contradicts intuition, and be suspicious of any answer that merely restates common sense.
On social studies and data-interpretation items, confusing chronology and causation: reversing cause and effect in a historical sequence, judging a past document by present standards, or reading correlation in a table as causation.
Historical and graphical items reward pattern-matching, and dramatic events feel like causes rather than effects. Tables and timelines also require reading axis labels, legends, and dates that are easy to skim past.
What to do instead
For history, build a two-column scratch list of event and date before answering and check that any 'because' or 'led to' claim runs in the right direction. For tables and graphs, read the axis labels and units aloud, note which variable is dependent, and reject any option claiming one variable caused another when the data show only that they moved together.