LNAT Inference Skills 2

Question 1

A study finds that cities with more public parks have lower rates of depression. A researcher concludes that building parks reduces depression. Which inference is most justified?

Accepted Answer

There is an association between parks and lower depression, but causation is unproven

Answer

Correlation between parks and lower depression does not establish that parks are the cause of lower depression.

Question 2

All contracts signed under duress are voidable. Leon signed a contract while being threatened. What can be inferred?

Accepted Answer

Leon's contract may be voidable at his option

Answer

A voidable contract can be affirmed or voided at the innocent party's choice, not automatically invalidated.

Question 3

Passage: 'Every law student at Greenfield passed the bar exam. Maya is a law student at Greenfield.' What follows necessarily?

Accepted Answer

Maya passed the bar exam

Answer

If every Greenfield law student passed and Maya is one, it follows necessarily that Maya passed.

Question 4

A politician argues: 'We must raise taxes or cut services. We cannot cut services. Therefore, we must raise taxes.' This reasoning is:

Accepted Answer

Valid as a disjunctive syllogism

Answer

This is a valid disjunctive syllogism: given A or B, and not B, therefore A.

Question 5

A newspaper reports that crime fell 20% in a city after hiring more police. A skeptic says the drop could be due to demographic changes. The skeptic is:

Accepted Answer

Raising a legitimate alternative explanation that undermines the causal claim

Answer

Identifying an alternative explanation is a valid way to challenge a causal inference drawn from correlational data.

LNAT Practice Test

LNAT Practice Test

LNAT Inference Skills 2