GMAT Integrated Reasoning
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In studies of extreme isolationism, researchers tried to determine if there was a limit on age after which an "isolated" child would be unable to develop socially. One child, Anna, was an illegitimate child and became a foster child to a family that had no time to care for her. She was left in the attic often and was attended to just enough to allow her to survive. At age 5 she was sent to another foster home where she experienced more interaction, yet by the time of her death at age 8 her development had not progressed.
In another case, Rebecca, also an illegitimate child, had a new set of caretakers at age 4 and began seeing social development at age 6. Her development from age 6-10 accelerated and she was considered to have normal social development by age 10.
Researchers concluded that social development after extreme cases of isolationism cannot develop past age 5 for a child but can develop before 5.
| Most Weaken | Most Strengthen | |
|---|---|---|
| Susan, another case of isolationism, saw just as much improvement in her social development as had Rebecca but her acceleration began even earlier at age 5 | ||
| Children with no social interaction do not live past age 8 | ||
| Johan began experiencing social interaction at age 3 yet never developed socially by the time of his death at age 5 | ||
| Martin was born to caring parents and was socially developed well before age 5 | ||
| The care takers at Anna's second |