James just turned 75-years-old. As he continues to age, which of the following physical changes is he most likely to experience?
A. His brain will become heavier.
B. He will notice small improvements in eyesight.
C. He will be unable to participate in aerobic exercise.
D. He may need to wear a hearing aid.
Answer: D
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Vince has mood swings that vary from relatively deep depression and mania that has caused risk-taking problems. His psychiatrist
a. is likely to recommend lithium to prevent future episodes of both mania and depression. b. is likely to recommend lithium to bring him out of a current manic or depressive episode. c. will warn Vince that his blood must be monitored carefully because high concentrations of lithium can be toxic and even fatal. d. is likely to do all of these.
The F ratio is _____
a. within groups variance divided by between groups variance b. between groups variance divided by within groups variance c. within groups variance divided by total variance d. between groups variance divided by total variance
A clear link between obese babies and overweight adults has been found.
Answer the following statement true (T) or false (F)
Carla is three-and-a-half weeks pregnant. This indicates that her child is in the ________ period of prenatal development.
A. embryonic B. germinal C. fetal D. placental