Which of the following tests is an example of a neuropsychological assessment?

The Halstead-Reitan test is an example of a neuropsychological assessment because it is specifically designed to evaluate a range of cognitive and behavioral abilities to identify brain dysfunction. This test measures various aspects of functioning, including attention, memory, language, and problem-solving, providing insight into how brain injuries or dysfunctions can affect an individual's cognitive abilities. It is structured to help understand the impact of neurological conditions on a person’s ability to perform daily activities and tasks.

In contrast, the other options represent different types of assessments or imaging techniques that do not primarily focus on cognitive functioning. For instance, a CT scan provides structural imaging of the brain, while an EEG measures electrical activity in the brain but does not assess cognitive abilities directly. A PET scan evaluates metabolic processes in the brain but does not provide the detailed cognitive assessment that neuropsychological tests like the Halstead-Reitan do. Thus, the Halstead-Reitan test stands out as a specific tool aimed at understanding cognitive deficits related to brain function.