An evaluative statement related to a person, object, or event, which can be positive or negative, is known as:

An evaluative statement concerning a person, object, or event that can be classified as either positive or negative is best described as an attitude. This concept encapsulates the overall evaluations or emotional responses individuals have towards specific entities. Attitudes are formed based on experiences, beliefs, and values and significantly influence behavior and decision-making.

In essence, when we talk about an attitude, we are referring to a predisposition to respond favorably or unfavorably towards something based on one's assessment of it. This encompassing nature of attitudes allows for a more nuanced understanding compared to narrower terms such as belief or judgment, as attitudes integrate affective, cognitive, and behavioral components.

The other options, while relevant concepts, do not capture the full essence of what an evaluative statement conveys. Perception relates more to how we interpret sensory information; judgment typically involves a conclusion reached based on reasoning or evidence; and belief pertains to convictions held to be true, which may not necessarily include an evaluative component like positivity or negativity. Thus, attitude is the most accurate term in this context.