Final answer:
The term that describes the influences shaping members' political perspectives within a social group is 'political culture.' It is part of political socialization and is closely linked to the concept of hegemony.
Step-by-step explanation:
The social, symbolic, and material practices of a social group that shape its members' political perspectives and communication processes are known as political culture. In a political culture, shared political attitudes, values, and goals are common among members within a political group. This phenomenon contributes to an individual's political socialization, which is the process of developing a political personality influenced by family, friends, education, and broader social networks. The dominant set of ideas framing the accepted social order is referred to as hegemony, which often represents the dominant ideology or worldview within a society.