Final answer:
Perceptual hypotheses are assumptions or expectations we unconsciously make about the properties of things based on past experiences and information, which shapes our perceptual set. They are distinct from scientific hypotheses or predictions, which are testable propositions in the context of scientific research.
Step-by-step explanation:
When we automatically and unconsciously make assumptions or have certain expectations regarding the properties of things based on our experiences, personalities, and prior information, this process is described as forming perceptual hypotheses. This influences our perceptual set, which is how we are primed to perceive the world around us. An example of a perceptual hypothesis could be expecting a green ice cream to taste like lime, and being surprised if it tastes like cherries instead. This is because our prior exposures to green-colored foods often being lime-flavored creates an expectation. This is somewhat different from creating a scientific hypothesis or making a prediction, which are also educated guesses but are more formal and testable propositions often used in scientific experimentation.