* The specific university: Different universities have different requirements.
* The specific program: Even within a single university, different specializations within psychology (e.g., clinical, developmental, cognitive) might have slightly different credit requirements.
* Coursework vs. dissertation: A substantial portion of a PhD is dedicated to research and writing a dissertation, which isn't always measured in credit hours. Some programs might heavily emphasize coursework, while others might have a lighter course load to allow for more research time.
While you might see ranges from 60 to 90 credits cited online as general figures, these are only rough estimates. You must check the specific requirements of the PhD program in psychology at the university you're interested in attending. Look for the program's website or contact the program's admissions office directly.