Final answer:
In Study A, party identification is a dependent variable, while in Study B, it's an independent variable.
Step-by-step explanation:
In Study A, party identification is a dependent variable because the study aims to explain different variables that lead to people holding various party identifications, like being Democrats or Republicans. Here, party identification is the outcome being measured, which is dependent on other variables (like demographics, socioeconomic status, etc.). Conversely, in Study B, party identification is an independent variable as the research focuses on the effect that political party identification has on people's views on various political issues. In this study, political views are the outcome that depend on the variable of party identification.