Paige, 8 years old, has developed ___________, or nearsightedness, probably due to the amount of time she spends reading, writing, and surfing the Internet

In Chapter 4, the In-Depth Section described research by Leonor Romero Lauro and her colleagues, which used a method called "Transcranial Magnetic Stimulation." These authors concluded that

a. working memory really is a storehouse that has a limit of 5 to 9 items. b. the left parietal lobe and the left frontal lobe are both relevant when you are reading long sentences with complex grammar. c. the right hemisphere and the left hemisphere are equally involved in language comprehension. d. the left hemisphere is relevant for long sentences, whereas the right hemisphere is relevant for complex sentences .

The results of Dr. Ozawa's research study have been found to generalize easily to real-world situations. This means Dr. Ozawa's research is:

a. statistically significant b. positively correlated c. internally valid d. externally valid