It is not until ____ months that an infant's visual acuity is strong enough to discriminate facial features and emotions at further distances

Elliot constantly worries about his health, his finances, his job security, and the stability of his marriage. Often, his worries keep him awake at night, causing him to be so fatigued at work that he cannot perform his duties adequately. His wife is becoming frustrated with him, since he is so preoccupied with his worries that he is unable to do the dinner dishes when it is his turn. Elliot's problem might be diagnosed as

a. panic disorder. b. generalized anxiety disorder. c. simple phobia. d. obsessive-compulsive disorder.

Which of the following statements accurately describes the impact of mental stress on physiological responses in the human body?

A. For individuals who work, Monday is the most likely day for a heart attack. B. Mental stress lowers blood pressure. C. The heart muscle receives increased oxygen flow during times of mental stress. D. Increased levels of stress positively correlate with increased levels of dopamine.