An innovative scanning technique that uses magnetic technology to visualize brain activity is called

Which of the following is true of grandparents in developed countries?

a. Grandfathers participate more than grandmothers in recreational and family activities. b. European American grandmothers are more likely to be involved in the daily care of their grandchildren compared to other ethnic groups because they have the resources to do so. c. Grandparents' involvement with their grandchildren depends partly on their relationship with their children and sons- and daughters-in-law. d. Grandparents' involvement with their grandchildren is usually based on a sense of duty or obligation.

The association between nicotine and ADHD is that

a) children's smoking can cause attention problems. b) maternal smoking can cause hyperactivity in offspring. c) nicotine in pill form reduces the side effects of Ritalin. d) the combination of Ritalin and nicotine has been shown to cause dangerous synergistic effects in adults with ADHD.