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PhD Program Requirements

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What Is a Doctorate Degree?

A doctorate is usually the most advanced degree someone can get in an academic discipline, higher education experts say.

What Is a Doctorate?

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It's unwise to apply to a doctoral program if you don't have a clear idea of how you might use a doctorate in your career.

In many academic disciplines, the most advanced degree one can earn is a doctorate. Doctorate degree-holders are typically regarded as authorities in their fields, and many note that a major reason for pursuing a doctorate is to increase professional credibility.

"If someone wants to be respected as an expert in their chosen field, and also wants to have a wider array of options in research, writing, publishing, teaching, administration, management, and/or private practice, a doctorate is most definitely worth considering," Don Martin, who has a Ph.D. in higher education administration , wrote in an email.

A doctoral degree is a graduate-level credential typically granted after multiple years of graduate school, with the time-to-degree varying depending on the type of doctoral program, experts say.

Earning a doctorate usually requires at least four years of effort and may entail eight years, depending on the complexity of a program's graduation requirements. It also typically requires a dissertation, a lengthy academic paper based on original research that must be vetted and approved by a panel of professors and later successfully defended before them for the doctorate to be granted.

Some jobs require a doctorate, such as certain college professor positions, says Eric Endlich, founder of Top College Consultants, an admissions consulting firm that helps neurodivergent students navigate undergraduate and graduate school admissions.

Endlich earned a Doctor of Philosophy degree, commonly known as a Ph.D., from Boston University in Massachusetts. He focused on psychology and notes that a doctoral degree is generally required to be a licensed psychologist.

"Since a Ph.D. is a research-focused degree, it can be advantageous to those seeking high-level research positions in scientific fields such as astrophysics or biotechnology," he says.

How Long it Takes to Get a Doctorate Degree

Martin, founder and CEO of Grad School Road Map, an organization that helps grad school applicants navigate the admissions process, says obtaining a doctorate is often a lengthy endeavor.

"Typically it can take between four and six years to complete any doctoral program," he says. "If comprehensive examinations and a dissertation are part of the graduation requirements, it may take a year or two longer. There is no standard amount of time – some students take seven to 10 years to finish."

Endlich says doctoral degree hopefuls should be aware that completing a dissertation may take a long time, especially if unexpected hurdles arise.

"My dissertation, for example, involved recruiting college students to complete questionnaires, and it took much longer than I anticipated to recruit enough subjects for my study," he says.

The standards for a dissertation, which include the proposal and research, are rigorous and usually involve a review and approval by a faculty committee, says Hala Madanat, vice president for research and innovation at San Diego State University in California.

"As part of dissertation requirements, some programs will require publication of the research in high-impact peer-reviewed journals," Madanat wrote in an email.

Types of Doctoral Degree Programs

According to professors and administrators of doctoral programs, there are two types of doctorates.

Doctor of Philosophy

A doctor of philosophy degree is designed to prepare people for research careers at a university or in industry, and teach students how to discover new knowledge within their academic discipline. Ph.D. degrees are offered in a wide range of academic subjects, including highly technical fields like biology , physics, math and engineering; social sciences like sociology and economics; and humanities disciplines like philosophy.

A Ph.D. is the most common degree type among tenure-track college and university faculty, who are typically expected to have a doctorate. But academia is not the only path for someone who pursues a Ph.D. It's common for individuals with biology doctorates to work as researchers in the pharmaceutical industry, and many government expert positions also require a Ph.D.

Professional or clinical doctorates

These are designed to give people the practical skills necessary to be influential leaders within a specific industry or employment setting, such as business, psychology , education or nursing . Examples of professional doctoral degrees include a Doctor of Business Administration degree, typically known as a DBA; a Doctor of Education degree, or Ed.D.; and a Doctor of Nursing Practice degree, or DNP.

A law degree, known as a juris doctor or J.D., as well as a Doctor of Medicine degree, or M.D., are also considered professional doctorates.

How to Get a Doctorate

Getting a doctorate is challenging. It ordinarily requires a series of rigorous classes in a field of study and then passage of a qualification exam in order to begin work on a dissertation, which is the final project.

Dissertations are difficult to write, says David Harpool, vice president of graduate and online programs at Newberry College in South Carolina. Some research indicates that only about half of doctoral students go on to finish their degree, and a main reason is that many never finish and successfully defend their dissertation

"Many of them are in programs that permit them to earn a master’s on the way to a doctorate," Harpool, who earned a Ph.D. from Saint Louis University in Missouri and a J.D. from the University of Missouri , wrote in an email. "The transition from mastering a discipline to creating new knowledge (or at least applying new knowledge in a different way), is difficult, even for outstanding students."

Learn about how M.D.-Ph.D. programs

There is a often a "huge shift in culture" at doctoral programs compared to undergraduate or master's level programs, says Angela Warfield, who earned a Ph.D. in English from the University of Iowa.

Doctoral professors and students have more of a collaborative relationship where they function as colleagues, she says. And there's pressure on each student to produce "significant and original research."

Many full-time doctoral students work for the school as researchers or teaching assistants throughout their program, so time management is crucial to avoid burnout. However, the dissertation "is by far the biggest battle," she says. The goal is to avoid an "ABD," she says, meaning "all but dissertation."

"In my writing group, we had two motivational slogans: 'ABD is not a degree,' and 'a good dissertation is a done dissertation,'" Warfield, now the principal consultant and founder of admissions consulting firm Compass Academics, wrote in an email.

How Are Doctorate Admissions Decisions Made?

Admissions standards for doctoral programs vary depending on the type of doctorate, experts say.

The quality of a candidate's research is a distinguishing factor in admissions decisions, Madanat says. Meanwhile, leaders of clinical and professional doctorate programs say that the quality of a prospective student's work experience matters most.

Doctoral programs typically expect students to have a strong undergraduate transcript , excellent letters of recommendation and, in some cases, high scores on the Graduate Record Examination , or GRE, Endlich says.

"The size of the programs may be relatively small, and universities need to be sure that applicants will be able to handle the demands of their programs," he says.

Because professional doctorates often require students to come up with effective solutions to systemic problems, eligibility for these doctorates is often restricted to applicants with extensive first-hand work experience with these problems, according to recipients of professional doctorates.

In contrast, it's common for Ph.D. students to begin their programs immediately after receiving an undergraduate degree. The admissions criteria at Ph.D. programs emphasize undergraduate grades, standardized test scores and research projects , and these programs don't necessarily require work experience.

Admissions decisions may also depend on available funding, says Madanat, who works with doctoral students to provide funding, workshops and faculty support to help their research.

Who Is a Good Fit for a Doctoral Program?

Doctoral degree hopefuls "should be interested in making a deep impact on their field, open-minded, eager to learn, curious, adaptable and self-motivated," Madanat says. "Doctoral programs are best suited for those whose goals are to transform and change the fields they are studying and want to make a difference in the way the world is."

Someone who loves to study a subject in great depth, can work alone or in teams, is highly motivated and wants to develop research skills may be a good candidate for a doctoral program, Endlich says.

Because of the tremendous effort and time investment involved in earning a doctorate, experts say it's foolish to apply to a doctoral program if it's unclear how you might use a doctorate in your career.

"The students are being trained with depth of knowledge in the discipline to prepare them for critical thinking beyond the current state of the field," Madanat says. "Students should consider the reasons that they are pursuing a doctoral degree and whether or not it aligns with their future professional goals, their family circumstances and finances."

Rachel D. Miller, a licensed marriage and family therapist who completed a Ph.D. degree in couples and family therapy at Adler University in Illinois in 2023, says pursuing a doctorate required her to make significant personal sacrifices because she had to take on large student loans and she needed to devote a lot of time and energy to her program. Miller says balancing work, home life and health issues with the demands of a Ph.D. program was difficult.

For some students, the financial component may be hard to overlook, Warfield notes.

"Student debt is no joke, and students pursuing graduate work are likely only compounding undergraduate debt," she says. "They need to really consider the payoff potential of the time and money sacrifice."

To offset costs, some programs are fully funded, waiving tuition and fees and providing an annual stipend. Some offer health insurance and other benefits. Students can also earn money by teaching at the university or through fellowships, but those adding more to their plate should possess strong time management skills, experts say.

"Graduate school, and higher education in general, can be brutal on your physical and mental health," Miller wrote in an email.

But Miller says the time and effort invested in her doctoral program paid off by allowing her to conduct meaningful research into the best way to provide therapy to children affected by high-conflict divorce and domestic violence. She now owns a therapy practice in Chicago.

Miller urges prospective doctoral students to reflect on whether getting a doctorate is necessary for them to achieve their dream job. "Really know yourself. Know your purpose for pursuing it, because that's what's going to help carry you through."

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