Perhaps the biggest change for grandparents that has occurred in recent years is

a. the number of grandparents who serve as custodial parents or primary caregivers for their grandchildren.
b. the number of grandparents who have been cut out of their grandchildren's lives as a result of conflict with their own children.
c. the number of grandparents who live single lives as opposed to being

Which of the following research designs, if conducted correctly without the influence of

extraneous variables, would allow you to make cause-and-effect conclusions? A) quasi-experimental B) two-group design with random assignment and IV manipulation C) ex post facto study D) B and C only E) all of the above because there is an IV

Case-study research

a. is the study of an existing situation b. requires examining factual information in existing records c. follows a standardized format d. is typically well planned in advance