Parallelism: Make It MATCH

Here's a scene I watch play out every single week. A smart, busy professional hits a Sentence Correction question on a practice Executive Assessment. They read the sentence once and hear it in their head. They think "yeah, that sounds fine" and pick (A). Then they move on, proud of the 20 seconds they just saved.

They just gave away a point.

Sentence Correction (SC) is the question type where part of a sentence is underlined and you pick the best version of that part from five choices. Choice (A) always repeats the original. And one of the errors that hides best behind a sentence that "sounds fine" is a parallelism error. I'll bet that if you pull up the last 10 SC questions you missed, more of them broke this rule than you'd guess. Go check. I'll wait.

What parallelism actually means

When a sentence puts things side by side, in a list or in a comparison, those things have to MATCH. Same grammar shape. If the first item in a list is an ing word, every item is an ing word. If you compare a cost, you compare it to another cost, not to a place or a person.

That's it. It's not a deep mystery. It's a matching game, and matching games reward people who look carefully and punish people who skim.

The three-step drill

You don't "feel" your way to a parallelism answer. You run a drill, the same way every time, until it's automatic.

1. Spot the trigger. Lists use and or or. Pairs use both...and, either...or, not only...but also. Comparisons use than, as, like, unlike and compared with. When you see one, a little alarm should go off.
2. Write the pieces down in a stack. On paper. Not in your head. One piece per line, first few words only. Stacking them makes the odd one jump out.
3. Let the part you CAN'T change be the boss. Anything outside the underline is fixed. It sets the pattern, and every other piece has to copy it.

Step 3 is the one most people never think about. Stop and think about why it matters before you read on. If the first item of the list sits outside the underline, then you already know the shape of the right answer before you look at a single choice.

Comparisons: compare the same KIND of thing

Lists get the attention, but comparisons are where people really bleed points. The rule: whatever is on one side of than or as has to be the same kind of thing as what's on the other side. A cost to a cost. A habit to a habit. Not a cost to a city.

The question to ask, every time: WHAT is being compared to WHAT? Name both things on paper. If you can't name both, you haven't read the sentence yet.

The mistakes I see over and over

1. Trusting your ear. You've spent a career writing emails and reports, so you assume your sense of "sounds right" is good enough. Everyday speech breaks parallelism constantly, so your ear is trained on the wrong data.

   INSTEAD: Write the stack. Every time. It takes seconds and it beats a guess.

2. Checking two pieces and quitting. The first two items match, so you assume the third does too. The last piece is the one people stop checking, which makes it a great place to hide an error.

   INSTEAD: Check EVERY piece against the boss, especially the last one.

3. Forgetting paired words. "She not only manages the team but also the budget" looks fine. But what follows "not only" is "manages the team," an action, and what follows "but also" is "the budget," a thing. They don't match.

   INSTEAD: Look at what comes right after each half of the pair. Fix: "She manages not only the team but also the budget." Now it's team and budget, thing and thing.

4. Reading all five choices top to bottom like a novel. That's slow, and by choice (D) you've forgotten what (A) said.

   INSTEAD: Scan down the choices and compare just the piece that changes. In the first example, the last item was the only thing moving around. Look at that spot in all five, cut the ones that break the pattern, and only then read the survivors in full.

5. Stopping at parallelism. Sometimes two choices both match perfectly, and one of them has a different error, like a describing phrase attached to the wrong noun.

   INSTEAD: Use parallelism to cut fast, then check the survivors for other issues. Our post on modifier errors covers the next one to look for.

Why this matters on the EA

The Verbal Reasoning section of the Executive Assessment gives you 14 questions in 30 minutes, mixing Sentence Correction, Critical Reasoning and Reading Comprehension. It's scored from 0 to 20, and it counts exactly as much as Integrated Reasoning and Quant toward your total of 100 to 200. The sections are adaptive section by section, so your work in each one shapes the test. You can see the full layout on GMAC's assessment structure page.

Do the math: 30 minutes for 14 questions is a little over 2 minutes per question on average. Reading Comprehension passages eat time. So every SC you answer cleanly and quickly buys you breathing room on the reading. That's why this section is really three different tests sharing one clock, and why the fast, reliable wins matter so much.

And here's the good part. Parallelism is one of the most predictable things on the test. The triggers are always the same. The fix is always the same. You don't need to be a grammar expert. You need a drill and the discipline to run it.

So here's your job for today. Pull 10 SC questions you've already done. Don't answer them. Just hunt. Circle every trigger word, write the pieces in a stack, and mark the boss. Then find the piece that doesn't match. If you can't name WHAT is being compared to WHAT in under 15 seconds, do that question again tomorrow. Train it until your pencil moves before your ear does.