Dianne is a psychologist who is interested in the progressive changes that people show in their physical, cognitive, emotional, and social abilities from conception to death. dianne is most likely a psychologist.

Dianne is most likely a "developmental" psychologist.

Developmental psychology refers to the logical investigation of how and why individuals change through the span of their life. Initially worried about babies and kids, the field has extended to incorporate pre-adulthood, grown-up improvement, maturing, and the whole life expectancy.