The nervous system in our body consists of various sensory systems, such as the visual, gustatory, olfactory, auditory, tactile, and vestibular senses, which enable us to receive and process stimuli from the environment. Ayres and Robbins defined sensory processing as a neurological process that organizes the sensory input received from the body and environment, allowing us to use the body effectively in our surroundings. This process is natural for humans and continues throughout life, without being limited to a specific age. When sensory processing issues arise, difficulties in adapting to the environment and using the body effectively can occur, leading to confusing social behaviors. Additionally, it becomes challenging to understand the atmosphere of the environment and the words and behaviors of others, resulting in slow responses to stimuli and difficulties in social activities and interpersonal relationships. In adults, challenges in sensory processing abilities can negatively affect attention, lead to inappropriate sensory regulation and defence, cause maladaptive behaviors, and impact academic success.

Just as work is a significant area of life for professionals, learning is a major aspect of life for university students. The university years are a critical period in Erikson's developmental stages for discovering and establishing identity. For university students, learning is a choice for continuous growth and self-regulation, adding meaning to life. Learning at university differs from secondary and high school education; the role of the learner shifts from passive to active, requiring them to manage their own learning. This creates significant differences in the amount and depth of knowledge acquired, depending on the learner's abilities. Today, with the overwhelming amount of available information, it is impossible to convey all necessary knowledge in a classroom setting. Students must develop the ability to independently evaluate and select the information they need. University learning offers greater independence and autonomy compared to other educational periods, and learning strategies that enhance efficiency play an important role in academic success.

Academic achievement is a comprehensive concept that reflects the extent to which individuals attain their educational goals. Various studies have identified internal and external factors that affect academic success. In recent years, sensory processing issues have been added to these factors, drawing the attention of researchers. According to Dunn's model, students with different sensory processing profiles may exhibit various behaviors in the learning environment: A "low registration" student may struggle to focus during class when not exposed to adequate stimulation and may prefer taking notes over actively following the lesson. A "sensation seeking" student may require continuous stimuli to stay focused and might satisfy this need by biting a pen or fidgeting. A student with "sensory sensitivity" might be disturbed by complex presentations in the classroom and have difficulty concentrating. A "sensation avoiding" student, on the other hand, may be bothered by classroom noise and the presence of other students and may choose to sit at the front of the class to concentrate better. These behaviors illustrate how sensory processing affects academic success. Despite its significance, research exploring the connection between sensory processing and academic performance in young adults remains limited. Therefore, this study aimed to evaluate the relationship between sensory processing and academic achievement in university students.