Vestibular processing in sensory integration theory is foundational for how a child organizes movement and engagement with the world. The vestibular system provides information about head movement and gravity, which the brain uses to regulate arousal and posture, plan actions, and coordinate movement across the body. A healthy vestibular system helps with arousal regulation—it can help a child stay alert yet calm enough to attend, or ramp up activity when needed for engagement. It also supports postural control by informing the body’s sense of balance and muscle tone, enabling the trunk and limbs to stabilise in space as a child sits, stands, or moves. Bilateral coordination—moving both sides of the body smoothly and in sync—depends on vestibular input to create a shared reference frame and timing for actions. For praxis, or motor planning, vestibular cues provide crucial information about spatial orientation, sequencing, and the anticipated effects of movements, which allows a child to plan and execute complex tasks like climbing, dressing, or manipulating toys. In typical development, these vestibular-driven processes show up as stable posture during play, the ability to explore different positions and environments, and the capacity to anticipate and organize actions toward a goal. While vestibular input can influence eye movements and can be related to motion-sickness experiences for some individuals, its primary and broader role is in organizing movement, arousal, and coordination, not limited to any single domain like eye movements, language, or as an inevitable cause of motion sickness.

The key idea here is that these approaches are grounded in regulating how sensory input affects behavior and participation. Champagne's Sensory Modulation Programs are designed to help individuals modulate arousal and reactivity through purposeful sensory experiences, a classic sensory processing intervention used in diverse populations, including older adults in certain settings. Mildred Ross's Five-Stage Groups describe a structured, stage-based group process that can incorporate sensory experiences and processing within the group dynamics, again aligning with how sensory-based OT aims to support engagement and regulation. Saying they are unrelated to sensory processing contradicts the very purpose of these approaches. The other statements fit because they reflect aspects of sensory-based interventions: targeting older adults in the modulation program, and using a staged group format that can integrate sensory experiences.

Collaborative Therapeutic Homework centers on partnering with the child and family to carry therapy into everyday life, designing tasks that can be practiced in real-world settings and often enriching them with group activities focused on social or life skills. This approach is about co-creating goals and a plan that extends beyond the clinic, so children practice interacting with peers, managing routines, and applying new skills in everyday contexts, with support from therapists and teammates in the same home or community environment. The inclusion of social skills or life skills groups fits this framework because it provides structured opportunities to practice these skills in a collaborative, real-life context, helping skills generalize beyond therapy sessions. In contrast, Ayres' Sensory Integration Frame of Reference focuses on sensory processing and integration techniques rather than a collaborative, homework-driven model; Systematic desensitization targets anxiety reduction through gradual exposure rather than skill-building in social and daily routines; and checklists are tools for tracking progress or screening but do not describe an approach that embeds collaborative homework and group practice into therapy.

Sensory evaluation gathers information about how a child perceives and processes sensory input and how that processing affects daily function. Self-reporting tools like Dunn's Sensory Profile capture the child’s or caregiver’s observations of sensory experiences. Informal clinical observations and performance-based exercises show how sensory processing plays out in real tasks and in everyday play. Standardized assessments such as SIPT, Degangi-Berk, the Sensory Processing Measure, and the Test of Sensory Functions in Infants provide structured, norm-referenced data across sensory domains to quantify patterns and compare them to peers. Interventions, including those based on sensory integration principles or Wilbarger’s sensory diets, are treatment approaches used to influence regulation and participation, not methods of evaluating sensory processing. Therefore, the statement about interventions is not part of the sensory evaluation components listed.