Aresearcher wants to study the effects of social class on consumption behavior. he establishes three different categories of social class in terms of amount of income. he then assigns each field worker a specified number of interviews with people in each income category although the interviewers are allowed to select who they interview. this is an example of

Social stratification

Explanation:

Social stratification is a sociological concept used to analyze and interpret the classification of individuals and social groups, based on data and common socioeconomic conditions.

The main objective of social stratification within Sociology studies is to understand the functioning of the hierarchical organization of a society. In addition, it also aims to identify the main distinctions between social classes and how inequalities are socially constructed.

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.

she recieved a treatment not thought to be specifically effective in treating her disorder.