This document discusses perception and the factors that influence it. It explains that perception is how individuals organize and interpret sensory impressions to make meaning of their environment. There are three main factors that influence perception: the perceiver themselves, the target or thing being perceived, and the situation. The document goes on to provide examples of cognitive biases and errors that can influence perception, such as the fundamental attribution error, self-serving bias, selective perception, halo effect, and stereotyping.