Dr. Anderson is interested in determining if infant crying and caretaker responses are different in economically developed and developing nations. She trains her research assistants to watch and record babies' behaviors in 3-minute increments, including variations in crying (for example, whimpering and pain cries), as well as caregiver responses (for example, holding and speaking). Dr. Anderson then chooses 50 participants in four different countries to be included in the study. What type of research design is she using

Base your answer for this question on the statement below and on your knowledge of social studies.my fellow citizens, events in iraq have now reached the final days of decision. for more than a decade, the united states and other nations have pursued patient and honorable efforts to disarm the iraqi regime without war. that regime pledged to reveal and destroy all its weapons of mass destruction as a condition for ending the persian gulf war in 1991.…— president george w. bush, march 17, 200344 which action did president george w. bush take following this statement?