What is the main thing that IQ tests try to predict?

A 68-year-old man is brought to the emergency room by his family. Family members tell the physician that their relative has been confused, agitated, and exhibiting memory impairments. These symptoms developed in the last few days; he has no prior history

of memory problems. Based on the family's information, the physician suspects the man is experiencing delirium. Which of the following questions would provide information that could confirm this diagnosis? a. "Does schizophrenia run in your family?" b. "Is he taking any medications at this time?" c. "Does he experience any difficulties with motor movements?" d. "Do any members of the family suffer from Huntington's disease?"

People who smoke are also more likely to drink excessively, and people who overeat usually do not get enough exercise. These observations illustrate that

a. many people have a disease-prone personality. b. genetics plays a strong role in one's addictions. c. unhealthy lifestyles almost always create multiple risks. d. the causes of poor health are coincidental and unpredictable.