A coalition is an alliance of groups

Which statement best describes doctrines of access:

a. they are clearly defined and largely inflexible b. they grant the Supreme Court flexibility in deciding which cases the federal courts will hear c. they vary little depending on the justices sitting on the court d. they are largely based on the Constitution and legislative acts

Which confounding factor is most likely to occur when participants are selected because their pretest measures were unusually high?

A) regression to the mean B) testing C) attrition D) selection