Assumptions
Separate what an argument needs from what would make it sufficient.
Explore necessary assumptions →Practice overview
Choose your focus.
Keep going.
More original questions for the skill you want to work on. Focus on a question type, choose a preferred difficulty or bring several types together.
The practice library
Go deeper on the skill you need.
Build a focused sequence or bring several question types together. These are additional original questions to use alongside your official preparation.
Strengthen & weaken
Judge which new information changes the support for a conclusion.
Try strengthening and weakening samples →Flaws
Identify the mistake between the evidence and the conclusion.
Explore flaw questions →Inference
Distinguish what follows from what merely sounds plausible.
Try an inference sample →Argument structure
Track conclusions, evidence and the role a statement plays.
See the practice library →Principles
Connect an argument or decision with the rule that supports it.
See the practice library →Parallel reasoning
Look past the topic to compare the underlying reasoning.
See the practice library →Resolve the discrepancy
Find the information that makes apparently conflicting facts fit.
Try a resolve sample →All the other ones
Round out your practice with the remaining logical-reasoning tasks.
See the practice library →Read beyond the argument
Reading comprehension.
Work on what a passage says, how it is organized and what its evidence supports. The library also includes reading-comprehension practice and core-skill checks.
Repeat the skill
Conditional logic.
Generate additional drills to practice translating rules and drawing valid inferences. Generated variations can reuse ingredients and structures.
Explore conditional-logic practice →Difficulty labels are editorial. Your selection is a preference; the program can use a nearby tier when unseen questions at that level are exhausted. The fixed library is finite, and generated drills are not guaranteed to be unique.
Need more hard practice?
Stretch the reasoning.
Then inspect it.
Choose Hard for a tougher session, or include Easy and Medium to reinforce the distinctions you want to make consistently. The levels describe editorial difficulty within this library; they are not calibrated official ratings.
The main bank is finite. When unseen questions at your preferred tier run out, practice can draw from a nearby tier. Use the explanations and saved questions to turn difficult answers into material for review.
Keep official practice tests available for exam-specific timed work. Logic Refined supplies additional original exercises between those tests.
How a session works
Less searching. More reasoning.
Set a focus, work through the explanation and keep going. Your membership connects the practice program with your saved work.
- 01
Choose your focus.
Choose a question type and preferred difficulty, or mix your practice.
- 02
Work the reasoning.
Answer, check and compare the explanations for all five choices.
- 03
Keep it with you.
Continue to the next question. Your answers and progress save automatically to your account.
The public samples let you try the answer-and-review experience immediately.
Open the sample questions →More than an answer key
Why this answer?
Why not that one?
A useful explanation distinguishes the correct answer from a tempting alternative. Here is a short comparison from the bookseller flaw sample.
Try the complete question first →Read a real answer comparison
C · Correct answer
treats independent checking of a calculation as making the observations used in that calculation an independent test of the formula.
The clerk independently verifies the error calculation, but the formula was adjusted using the very sales being checked. Accurate arithmetic does not turn the records used to fit the formula into a separate test of its forecasts for new titles.
B · Tempting alternative
assumes that adding information to a forecasting method necessarily improves the accuracy of the forecasts it produces.
The designer offers measured performance on last spring’s titles, not simply the presence of more information. That performance is inadequate as an independent test, but the argument does not claim that every additional detail must improve a forecast.
Exact answer text and explanations from the original public sample. Read the whole argument and every choice →
Membership
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A place to keep practicing.
Try the public samples first. Choose membership when you want the full practice program and your saved work.
Student membership
For your own practice.
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- More than 1,200 original LR-style questions
- Reading-comprehension practice and skill checks
- Generated conditional-logic drills
- All five answer choices explained
- Preferred difficulty, Review and saved work
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