Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

social contact people report, the better their mental skills

Expert replies
by vishalwin » Sat Sep 19, 2015 8:46 am
It is widely assumed that people need to engage in intellectual activities such as
solving crossword puzzles or mathematics problems in order to maintain mental
sharpness as they age. In fact, however, simply talking to other people—that is,
participating in social interaction, which engages many mental and perceptual
skills—suffices. Evidence to this effect comes from a study showing that the more
social contact people report, the better their mental skills.
Which of the following, if true, most seriously weakens the force of the evidence
cited?
(A) As people grow older, they are often advised to keep exercising their
physical and mental capacities in order to maintain or improve them.
(B) Many medical conditions and treatments that adversely affect a person’s
mental sharpness also tend to increase that person’s social isolation.
(C) Many people are proficient both in social interactions and in solving
mathematical problems.
(D) The study did not itself collect data but analyzed data bearing on the
issue from prior studies.
(E) The tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.


Experts, Please help me to understand this question.
Join the discussion
Source: — Critical Reasoning |

by DavidG@VeritasPrep » Sat Sep 19, 2015 9:39 am
The conclusion here is that engaging in social interaction will lead to improved mental abilities in the elderly. So we have a causal relationship that can be boiled down in a simple arrow diagram

social interaction ---> better mental abilities

The issue is that all we know for sure is that there is a correlation between social interaction and improved mental abilities, not necessarily a causal relationship. So while the argument asserts that some elderly people have better mental abilities because they frequently socialize, it's also possible that only the elderly people who have retained their mental abilities are able to socialize. Put another way, it's possible that the arrow diagram runs the other way

better mental abilities ---> social interaction

In this case, there isn't necessarily a cognitive benefit from social interaction, but rather, social interaction is a result of having maintained a certain minimum level of cognitive function.

Now look at answer choice B. Many medical conditions and treatments that adversely affect a person’s
mental sharpness also tend to increase that person’s social isolation.


If those who have experienced cognitive decline remain isolated, it doesn't mean that socialization has cognitive benefits. It means that those who have lost their cognitive abilities are no longer likely to socialize. Because B weakens the idea that socialization confers mental benefits, this is the answer.
Veritas Prep | GMAT Instructor

Veritas Prep Reviews
Save $100 off any live Veritas Prep GMAT Course
Join the discussion