Which testing procedure uses high-frequency sound waves and is used as an adjunct to other procedures such as amniocentesis?

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.

According to Erikson, adolescents are undergoing the stage of trust versus mistrust

A. True B. False