6.2 Tackling "True-But-Wrong" & Partial-Match Answer Choices
Key Takeaways
'True-But-Wrong' (TBW) distractors state factually accurate passage details that fail to answer the specific question stem (e.g., providing a supporting detail when asked for the Main Point).
Partial-Match distractors combine a perfectly accurate initial clause with a subtle textual or logical error in the final clause, exploiting test-takers who fail to read choices end-to-end.
Misattributed detail distractors take true passage facts and attribute them to the wrong scholar, theory, historical era, or experimental group.
To defeat True-But-Wrong choices, test-takers must execute a strict 'Question-Stem Re-Check' to confirm that an accurate fact actually fulfills the specific prompt demand.
Under the 'Compound Choice Rule', an answer choice containing multiple clauses is a single logical unit; if any single part of the choice is unsupported or false, the entire choice is wrong.
6.2 Tackling "True-But-Wrong" & Partial-Match Answer Choices
As candidate performance on standard distractors (such as crude Out-of-Scope or Extreme choices) has improved, LSAC item writers have increasingly relied on subtle psychometric traps: True-But-Wrong (TBW) answer choices and Partial-Match options.
These distractors do not rely on blatant fabrications. Instead, they exploit cognitive recognition bias. When test-takers read an answer choice that mirrors exact phrases or true facts from the text, their brain experiences a wave of familiarity. If the test-taker is rushed, they often select the choice immediately without verifying whether it answers the specific question asked or whether the remainder of the sentence maintains logical accuracy.
Trap Type 1: The "True-But-Wrong" (TBW) Distractor
A True-But-Wrong distractor is an answer choice that contains a statement factually verified by the passage, but fails to satisfy the functional demand of the question stem.
+-------------------------------------------------------------------------+
| TRUE-BUT-WRONG (TBW) DISCONNECT |
+-------------------------------------------------------------------------+
| Question Stem Prompt : "Which one of the following best expresses the |
| MAIN POINT of the passage?" |
|-------------------------------------------------------------------------|
| Passage Content : Paragraph 1: Introduces legal doctrine X. |
| Paragraph 2: Notes minor Exception Y in 1920. |
| Paragraph 3-4: Author argues doctrine X must be |
| overturned due to Constitutional |
| flaws. |
|-------------------------------------------------------------------------|
| Choice A (TBW Trap) : "In 1920, legal doctrine X was subject to |
| Exception Y." |
| Analysis : 100% Factually True according to Paragraph 2, |
| but 0% Main Point! It is a subordinate detail. |
+-------------------------------------------------------------------------+
Common Question Stem vs. TBW Mismatches
- Main Point / Primary Purpose Stems: The stem asks for the central thesis or ultimate communicative goal of the passage. The TBW choice provides a narrow supporting premise, a background historical fact, or a single experimental finding from Paragraph 2.
- Function / Role Stems: The stem asks why the author mentioned a specific study in Line 24 (e.g., "primarily in order to..."). The TBW choice summarizes the result of the study rather than explaining its rhetorical purpose (e.g., to challenge a rival scholar's premise).
- Author Stance Stems: The stem asks for the author's attitude toward a new policy. The TBW choice accurately describes a critic's attitude or a historical consensus mentioned earlier in the text.
- Inference Stems: The stem asks what can be inferred about Subject A. The TBW choice states a fully supported fact about Subject B.
| Question Stem Type | What the TBW Distractor States | Why the Distractor Fails |
|---|---|---|
| Main Point | A true, specific detail from Paragraph 2 | Fails to encapsulate the author's ultimate thesis or overarching argument. |
| Primary Purpose | A true description of what Paragraph 1 does | Describes a localized paragraph function rather than the whole passage goal. |
| Authorial Stance | An accurate summary of a third-party critic's view | Misattributes third-party perspective to the author's own stance. |
| Rhetorical Function | A factual paraphrase of the cited line itself | States what the line says rather than why the author introduced it. |
Trap Type 2: The Partial-Match ("Half-Right, Half-Wrong") Choice
A Partial-Match distractor is structured so that the first 60–80% of the sentence is impeccably accurate, directly matching the text, while the final clause introduces an incorrect noun, an unsupportable causal link, or an exaggerated modifier.
The Anatomy of a Compound Choice Trap
Consider this passage statement:
"The Supreme Court overturned the appellate decision, holding that the statutory notice provision violated due process rights under the Fourteenth Amendment."
Now observe how an item writer crafts a Partial-Match distractor:
Why Test-Takers Fall for Partial Matches
- Confirmation Bias Momentum: When a test-taker reads a correct initial clause, their brain flags the choice as correct. This creates psychological momentum that leads them to skim over the remaining words.
- Fatigue and Speed Traps: Under intense time pressure (8.5 minutes per passage set), candidates rush through long answer choices, paying less attention to sentence endings.
Important
The Compound Choice Rule: In LSAT logic, an answer choice is a single conjunction of claims. If an answer choice contains three true statements and one false statement, the truth value of the overall answer choice is FALSE. You must read every choice completely through its final period.
Trap Type 3: Misattribution & Right Detail / Wrong Context
Another sophisticated variant of the true detail trap is Misattribution. Here, the passage contains every single fact mentioned in the choice, but the item writer splices those facts into an improper relationship or context.
PASSAGE FACTS:
- Scholar Richter conducted Experiment 1 using Method X (1998).
- Scholar Vance conducted Experiment 2 using Method Y (2005).
MISATTRIBUTED DISTRACTORS:
├── Choice A: "Richter utilized Method Y during Experiment 1..." (Swaps Methods)
├── Choice B: "Vance's 2005 study served as the baseline for Richter's work..." (Inverts Chronology)
└── Choice C: "Richter and Vance jointly developed Method X..." (Falsely Combines Scholars)
Dissecting Contextual Misattribution
- Speaker / Scholar Swapping: Assigning the findings, methods, or critiques of Scholar A to Scholar B.
- Temporal / Epoch Inversion: Taking a factual characteristic of 18th-century common law and applying it to 20th-century statutory codification.
- Experimental Variable Inversion: Swapping the results of the control group with those of the experimental treatment group.
The Question-Choice Alignment Matrix Protocol
To defeat True-But-Wrong and Partial-Match distractors, implement the Question-Choice Alignment Matrix during your answer elimination process:
+---------------------------------------+
| FACTOR 1: Textual Accuracy |
| Is the statement true per the text? |
+------------------+--------------------+
|
YES | NO
v v
+------------------------------+ [ ELIMINATE: Out-of-Scope / ]
| FACTOR 2: Stem Fulfillment | [ Exaggerated / Opposite ]
| Does it answer the SPECIFIC |
| question prompt asked? |
+--------------+---------------+
|
YES | NO
v v
+-------+ [ ELIMINATE: True-But-Wrong Trap! ]
| SELECT|
| CHOICE|
+-------+
The Final Verification Rule
Before bubbling or clicking your final option, execute a 3-second Stem-Filter Check:
- Re-read the question stem core (e.g., "Primary purpose of paragraph 3").
- Ask yourself: "Does this full choice describe the primary purpose of paragraph 3, or is it merely something that is true about paragraph 3?"
- If it merely states a true detail without fulfilling the functional prompt, eliminate it immediately.
Passage Summary: A legal passage analyzes how the adoption of strict liability standards in product liability law affected corporate manufacturing practices. In Paragraph 2, the author notes in passing that early 20th-century courts strictly adhered to the privity of contract doctrine, which required a direct contractual relationship between consumer and manufacturer.
Question Stem: Which one of the following best states the MAIN POINT of the passage?
The adoption of strict liability standards fundamentally transformed corporate manufacturing by incentivizing rigorous pre-market safety testing.
In the early 20th century, courts required consumers to establish direct privity of contract with manufacturers before bringing product liability lawsuits.
Privity of contract doctrines prevented early 20th-century consumers from recovering damages for defective manufactured goods.
Product liability law in the early 20th century was characterized by judicial adherence to traditional common law principles.
Passage Excerpt: 'In her seminal paper, Dr. Arisaka demonstrated that solar radiation pressure induces subtle orbital perturbations in high-altitude satellites, a phenomenon previously dismissed by classical ballistic models.'
Question Stem: Which one of the following best describes the PRIMARY PURPOSE of mentioning Dr. Arisaka's paper?
To prove that classical ballistic models are entirely invalid across all astronomical and satellite calculations.
To provide empirical evidence showing that solar radiation pressure produces measurable orbital effects that refute classical ballistic assumptions.
To detail the exact mathematical formulas Dr. Arisaka used to calculate high-altitude satellite trajectories.
To argue that high-altitude satellites should be redesigned to resist solar radiation pressure.
Passage Context: Paragraph 1 explains Historian Miller's view that 19th-century agrarian revolts were driven purely by credit constraints. Paragraph 2 presents Historian Gomez's counter-view that cultural identity played the dominant role. Paragraph 3 shows the author agreeing with Gomez while noting Miller's contribution regarding interest rates.
Question Stem: According to the passage, Historian Gomez holds which one of the following views regarding 19th-century agrarian revolts?
They were triggered primarily by acute credit constraints and rising interest rates imposed by urban banks.
They represented a joint collaboration between urban credit reformers and rural agrarian leaders.
They were driven primarily by cultural identity factors rather than exclusively by credit constraints.
They failed to achieve long-term political reform because of ideological divisions among rural leaders.
Passage Statement: 'Although the new synthetic catalyst dramatically increases reaction yields in laboratory trials, its high production cost currently prohibits widespread commercial deployment.'
Which of the following distractor types is illustrated by an answer choice stating that 'the synthetic catalyst effectively increases reaction yields in laboratory trials, enabling immediate large-scale industrial profitability'?
An Out-of-Scope distractor that introduces unrelated chemical compounds.
An Opposite distractor that claims the catalyst decreased reaction yields in laboratory trials.
A True-But-Wrong distractor that accurately quotes the inventor's name.
A Partial-Match distractor that correctly states the laboratory yield increase in its first clause but contradicts the passage by asserting immediate industrial profitability in its second clause.
Sections you finish are checked off in the contents.