Answer: The process that Hadya has used in forming her perceptions is thin slicing.
Explanation: Thin-slicing is a term used to refer to the inferences or generalizations that an individual makes about a person or a situation based on little and insufficient evidence. This term is mainly used in the field of psychology. Therefore, taking everything into account, it can be said that the process that Hadya used was thin-slicing as she made quick inferences about her professors based on an insufficient amount of information.