There are __________ seats in the House of Representatives

Imagine a hypothetical study using a nonequivalent comparison group designed to assess the effectiveness of an anti-drug, "Just Say No," campaign. In this study students at school X receive a semester-long series of "Just Say No" lectures

Students at school Y across town do not receive the intervention. Unfortunately, during the semester a student at school Y died after an accidental drug overdose. This incident may have influenced drug use at school Y (but not school X) and consequently make it impossible to interpret our research findings. Which of the following threats to internal validity is present in this study? a. selection-instrumentation b. selection-maturation c. selection-history d. selection-testing

Private groups who attempt to influence government to respond to the shared attitudes of their members without electing candidates to public office are interest groups

Indicate whether the statement is true or false