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} Which of the following describes difficulties with 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} Which of the following describes difficulties with this study?

Quizplus · Accepted Answer

- Generalizability: The study only included 400 women, so it may not be representative of the entire population. Therefore, generalizability is a difficulty with this study.
- Confounding variables: The study controlled for a wide range of interrelated factors, but there may still be unidentified confounding variables that could have affected the results. Therefore, confounding variables are a difficulty with this study.
- Possible experimenter effect: The narrative does not provide any information that suggests possible experimenter effect, so this is not a difficulty with this study.

Case Study 6.4 Smoking During Pregnancy and Child's Iq