Final answer:
Bias is caused by a variety of factors including the media's influence, family and social group interactions, demographic characteristics, and cognitive psychology principles such as confirmation bias.
Step-by-step explanation:
What causes bias? There are several factors that contribute to the formation of biases. One viewpoint is that media plays a role by framing information in certain ways, which can prime individuals to perceive the world from that angle, influencing biases. However, it is also recognized that biases can be learned through our interactions with our family and social groups, which shape our values and opinions from a young age.
Furthermore, demographic characteristics such as age, race, or gender can influence perspectives and thus contribute to biases. Historians and other researchers often make an effort to recognize and manage their own biases, especially when examining past events or when conducting research. It is essential to engage in self-reflection, questioning our beliefs and decisions, in order to understand and potentially reduce biases.