Dr. Robinson conducts research on the relationship between brain chemistry and intellectual functioning. Which psychological specialty does Dr. Robinson's research best represent?

Psychiatry and Cognitive Psychology

Explanation:

Psychiatry focuses on intellectual functioning and its relationship with brain chemistry. It diagnoses, treats, prevents mental behavioral and emotional disorders. Dr. Robinson in his effort to understand and conduct research into the relationship between brain chemistry and intellectual functioning will need to carry out cognitive tests on the individual's perception, thinking and memory.