Case study 6.4
Smoking during pregnancy and child's iq
For Questions use the following narrative
Narrative: Case study 6.4 summary
Four hundred women participated in this study.Researchers found that children ages 3 and 4 whose mothers smoked 10 or more cigarettes a day during pregnancy scored about 9 points lower on intelligence tests than the children of nonsmokers.The gap narrowed to 4 points against children of nonsmokers when a wide range of interrelated factors were controlled for.The lead researcher was quoted as saying "It is comparable to the effects that moderate levels of lead exposure have on children's IQ scores."

-{Case study 6.4 narrative} What is one possible confounding variable that may or may not have been controlled for in this study?

Question

Case study 6.4
Smoking during pregnancy and child's iq
For Questions use the following narrative
Narrative: Case study 6.4 summary
Four hundred women participated in this study.Researchers found that children ages 3 and 4 whose mothers smoked 10 or more cigarettes a day during pregnancy scored about 9 points lower on intelligence tests than the children of nonsmokers.The gap narrowed to 4 points against children of nonsmokers when a wide range of interrelated factors were controlled for.The lead researcher was quoted as saying "It is comparable to the effects that moderate levels of lead exposure have on children's IQ scores."

-{Case study 6.4 narrative} What is one possible confounding variable that may or may not have been controlled for in this study?

Quizplus · Accepted Answer

The Answer is Any reasonable answer ok.examples: socio-economic status; exposure to secondhand smoke; mothers' diet, education, age, drug use; parents' iq; prenatal care; duration of breastfeeding, etc.

Case Study 6.4 Smoking During Pregnancy and Child's Iq