Assistive Technology Professional (ATP) Practice Test

The switch hierarchy that begins with hands as the primary method of activation is structured based on the prevalence and ease of movement for individuals when using different parts of the body for assistive technologies. Starting with the hands makes sense as they are generally the most dexterous and capable of fine motor skills, allowing for precise control of switches.

Following the hands, the head is typically the next option. Head movements can be beneficial for users who may have limited hand function but still have some control over their head movements. This allows them to interact with technology in ways that are relatively easy compared to other body parts.

Feet are usually considered after head movements in the hierarchy, as their use can require more coordination and may not offer the same level of tactile feedback or control. While feet can be used effectively, they tend to be less precise than hands and head movements.

This hierarchical approach helps to identify the most effective and efficient means for individuals to interact with assistive devices, maximizing their engagement and independence.