In 2011, approximately how many American children between the ages of 4 and 17 years were diagnosed with attention deficit hyperactivity disorder (ADHD)?
a. less than 1 percent
b. about 7-8 percent
c. about 11 percent
d. about 15 percent
Question 2
The use of medications for treating autism spectrum disorder
a. has been more effective than behavioral treatments.
b. is effective with low-functioning children, but has little effect on high-functioning children.
c. has not yet been evaluated scientifically due to ethical concerns.
d. has been ineffective.
History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar
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Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his
Results from sequential study of two cohorts tested at three ages and at three different points in t
Diagnostic Imaging Procedures and Conditions Diagnosed or Treated
Sample hypnograms of an infant at ages 3, 12, and 24 months