Which of the following statements is supported by research on lead exposure during childhood?
A) Overall, poorer intelligence test scores associated with lead exposure seem to be permanent.
B) Lead-exposed children given drugs to induce excretion of lead improve in long-term outcomes.
C) Once lead-exposed children move away from contaminated areas, their intelligence test scores increase.
D) Negative lead-related cognitive consequences are evident only at high levels of exposure.

Question

Quizplus · Accepted Answer

Research has shown that lead exposure during childhood can lead to permanent reductions in cognitive abilities, including intelligence test scores. Even low levels of lead exposure have been associated with negative cognitive consequences. Remediation measures, such as chelation therapy, have not been consistently shown to improve long-term outcomes.

Which of the Following Statements Is Supported by Research on Lead