A city introduced a minimum wage increase in 2015. To study the effect on employment, researchers compare employment changes in this city with a similar city that did not change the minimum wage. Which of the following assumptions are essential for the Difference-in-Differences (DiD) estimation to be valid?

Card, Dobkin, & Maestas, (2009) examined the impact of Medicare eligibility at age 65 on health care utilization. The “running variable” is a person’s age, with a sharp cutoff at 65 (treatment starts at 65). Which of the following would invalidate the RDD approach in this study? Select all that apply

Which of the following was discussed in the lecture as instrumental (tangible) social support?

What does the USF Counseling Center offer to students?

What is one major benefit of physical activity on mental health?

All the following positively impact the immune system EXCEPT:

What is the treatment for HIV?

According to the lecture, what is the age group in which most people are likely to experience their first manic episode?

What are the benefits of getting vaccinated?

Approximately ___ lives are save annually worldwide because of vaccines