* Bachelor's Degree (BA or BS): Typically takes 4 years of full-time study.
* Master's Degree (MA or MS): Typically takes 1-2 years of full-time study after completing a bachelor's degree.
* Doctorate Degree (PhD): Typically takes 4-7 years or more of full-time study after completing a master's degree. This can vary greatly depending on the research involved and the individual's progress.