Stanley conducts a study in which he assesses teasing in a sample of first-graders during the first week of school and again three months later. Because the study is longitudinal, Stanley has to worry about which of the following threats to internal validity?

This passage would suggest that sudan might have a a) democracy. b) dictatorship. c) command economy. d) communist government.

In the compound republic of america, the power surrendered by the people is first divided between two distinct governments, and then the portion allotted to each subdivided among distinct and separate departments. hence a double security arises to the rights of the people. the different governments will control each other, at the same time that each will be controlled by itself.—madison, number 51 based on the quote, which of the following statements would madison have likely supported? development of political parties is necessary to ensure the security and stability of a democratic government. a government must have enough power to govern however, its power must also be limited by creating multiple branches within it. one government can not carry out the will of the people alone, therefore the establishment of two separate governments is necessary. a government must sometimes limit civil liberties of individuals to ensure the safety and security of all citizens.

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject. a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher. wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners. acceptable only when the researcher’s irb grants a special waiver.