1. Find the independent and dependent variables in the following examples: People´s attitudes can be changed by propaganda
Independent variable:
Dependent variable:

A:Workers will produce less if the work environment is noisy
Independent variable:
Dependent variable:

B:Training hard will make you a faster runner
Independent variable:
Dependent variable:

C: Certain vitamins could extend a person’s life-expectancy
Independent variable:
Dependent variable:

D: If you take a math test in the morning you will do better than if you take it in the evening
Independent variable:
Dependent variable:

E: Human attention varies at different times of the day
Independent variable:
Dependent variable:

F: Smiles tend to bring a smile to those who are smiled at
Independent variable:
Dependent variable:

A46-year-old man with a history of hypertension and hypercholesterolemia visits the physician for a routine followup. the patient's job involves a lot of travelling, and he admits to occasionally forgetting to take his medications with him when he travels. he complains of several episodes of chest pain in the past few months. the pain is sharp in nature, mainly over his lower chest and epigastrium, and tends to come on when walking. he believes these episodes are due to indigestion and has been taking antacids. there is a family history of heart disease, and his father died of a heart attack at age 48. on physical examination, his blood pressure is 150/80 mmhg and heart rate is 86/min. his lungs are clear to auscultation. cardiac auscultation reveals normal rate and rhythm, without rubs, gallops, or murmurs. there is no pedal oedema. he is sent for an exercise stress test. five minutes into the test, he develops st depression of 3mm in leads v1-v5. the st segment depression is greater than 0.12 seconds in duration and the stress test is stopped. which of the following is the most appropriate next step in management? - coronary angiography- holter monitor- no further tests are required- repeat stress test with thallium- upper gastrointestinal endoscopy

Active immunity refers to: a. the defenses people are born with. b. temporary immunity granted from another source. c. immunity gained through immunization and exposure to diseases. d. natural immunities that protect humans from other animal diseases

One way to improve self-esteem is through positive self-talk. select the best answer from the choices provided. t f