1.Political socialization---how people learn about or are inculcated with political values through their families, schools, religious background, and so on
2. Interest articulation ---how interests are articulated and conveyed, which sounds similar to American-style interest group activity or lobbying
3. Interest aggregation---how interests are combined or aggregated, which sounds like political party activity.
4. Political communication----how influence and interests are transmitted to decision makers, la Lerner.
On the output or policy delivery side there were three more functions :
5. Rule-making ---who makes the rules or laws, which sounds like a U.S.-style legislative activity.
6. Rule-execution ---carrying out or administering the laws, which sounds like the U.S.-style executive branch
7. Rule-adjudication---deciding conflicts over rules or laws, rather like the U.S.-style judicial branch.