2027 PhD vs Professional Doctorate in Social Science: Key Differences, Careers, and Salary Outcomes
Co-Founder and Chief Data Scientist
Choosing between a PhD and a professional doctorate in social science is really a choice between becoming a knowledge producer and becoming an advanced practice leader. The decision matters because doctoral study is expensive, time-intensive, and tied closely to career fit. The U. S. Bureau of Labor Statistics reported median pay of about $83,980 for postsecondary teachers in 2024, but applied leadership roles can follow different pay patterns. This guide helps future researchers, educators, social work leaders, policy professionals, and public-sector managers compare focus, cost, timelines, careers, and salary trade-offs before applying.
Key Things You Should Know
- A PhD in social science is usually best for academic, research, policy analysis, and theory-building careers, while a professional doctorate such as a DSW, DPA, or practice-focused EdD is usually designed for applied leadership, program improvement, clinical-administrative practice, or executive roles.
- Salary depends more on occupation, employer, location, and experience than on the doctorate label; BLS May 2024 wage data show social science-related medians ranging from about $78,240 for social and community service managers to more than $139,000 for political scientists.
- PhD programs are more likely to offer assistantships, tuition remission, and stipends, while many professional doctorates are built for working adults but are more often self-funded through employer aid, savings, federal loans, or part-time enrollment.
What Is the Difference Between a PhD and a Professional Doctorate in Social Science?
A PhD, or Doctor of Philosophy, in a social science field is a research doctorate. It trains students to ask original questions, design rigorous studies, publish scholarship, and contribute new knowledge in areas such as sociology, political science, social work, public policy, anthropology, economics, criminology, or human services.
A professional doctorate is a practice-oriented terminal degree. In social science, common examples include the Doctor of Social Work, Doctor of Public Administration, Doctor of Education in community or organizational leadership, and other applied doctorates tied to policy, social services, nonprofit leadership, public-sector management, or clinical-administrative practice. These programs usually emphasize applying evidence to real systems rather than producing theory for academic audiences.
The comparison below shows the core decision points. If you are still earlier in your education path and want foundational preparation before graduate school, comparing the best online bachelors in sociology programs can help you understand how undergraduate social science study connects to later doctoral options.
| Comparison point | PhD in Social Science | Professional Doctorate in Social Science |
| Primary purpose | Create original research and advance scholarly knowledge | Apply research to improve organizations, programs, policy, or practice |
| Best fit | Future professors, researchers, policy scholars, think tank analysts, or research directors | Experienced professionals pursuing senior practice, agency leadership, consulting, or executive roles |
| Main final project | Dissertation based on original research | Applied dissertation, capstone, practice portfolio, or improvement project |
| Typical learning style | Research seminars, methods training, theory, independent scholarship | Applied coursework, leadership training, case-based learning, field-based projects |
| Funding pattern | More likely to include assistantships or fellowships, especially in full-time campus programs | More often self-funded, employer-supported, or designed for part-time students |
| Career signal | Strongest signal for research credibility and academic hiring | Strongest signal for advanced practice expertise and leadership readiness |
The biggest mistake is assuming one doctorate is automatically "better." A PhD can be the stronger choice if you want to publish, teach at a research university, or lead studies. A professional doctorate can be the better investment if your goal is to change systems from inside an agency, nonprofit, school district, public office, healthcare organization, or social service network.
How Do PhD and Professional Doctorate Curricula, Research, and Capstone Requirements Differ in Social Science?
The curriculum difference is not just about course titles. It reflects the degree's purpose. PhD programs ask students to become independent researchers, while professional doctorates ask students to become advanced users of research who can solve complex problems in practice settings.
Most PhD curricula are built around theory, research design, statistics or qualitative methods, specialization seminars, comprehensive exams, and dissertation research. Professional doctorate curricula often include leadership, program evaluation, ethics, policy implementation, organizational change, advanced practice models, and a field-based project.
The table below clarifies how the research and final-project expectations usually differ, which is one of the most important factors to understand before applying.
| Requirement | PhD pathway | Professional doctorate pathway |
| Research training | Deep training in theory, methodology, data analysis, and scholarly writing | Training in applied research, evidence-based practice, evaluation, and decision-making |
| Comprehensive exams | Common and often required before dissertation work | May be replaced by portfolios, applied assessments, or milestone projects |
| Dissertation or final project | Original research intended to contribute new knowledge to the field | Applied project that addresses a real-world problem, program gap, organizational need, or policy issue |
| Audience | Scholars, journal reviewers, faculty committees, academic employers | Practitioners, agency leaders, policymakers, clients, communities, or organizational stakeholders |
| Common output | Peer-reviewed articles, conference presentations, datasets, theory development | Program evaluation, intervention model, policy brief, implementation plan, practice innovation |
When comparing programs, look closely at the final project. A dissertation that requires multi-year original data collection may not fit someone who wants to remain in a demanding full-time leadership role. A capstone may not be sufficient if your target job is tenure-track faculty at a research-intensive university.
Use these questions to judge whether a curriculum matches your goals:
- Do you want to design original studies, or do you want to apply research to improve practice?
- Does the program require advanced quantitative, qualitative, or mixed-methods coursework aligned with your intended career?
- Will the final project produce something useful for your target employers, such as publications, policy briefs, program evaluations, or leadership portfolios?
- Are faculty members actively working in your area of interest, and do they supervise the type of research or applied project you want to complete?
- Does the program provide support for statistics, research software, ethics review, writing, and publication?
What Are the Admissions Requirements for a PhD vs Professional Doctorate in Social Science?
Admissions requirements vary by discipline, but PhD programs generally evaluate research readiness, while professional doctorates evaluate advanced practice experience and leadership potential. Both may require a master's degree, though some PhD programs admit students directly from a bachelor's degree into a longer doctoral track.
For social work-focused pathways, it is especially important to understand that a doctorate usually does not replace the MSW for clinical licensure. If clinical social work is part of your goal, reviewing best online MSW programs may be more relevant before considering a DSW or PhD.
The following table summarizes common admissions differences. Individual schools may be more flexible or more selective, so always confirm requirements directly with the program.
| Admissions factor | PhD in Social Science | Professional Doctorate in Social Science |
| Prior degree | Bachelor's or master's, depending on the program | Usually a master's degree in a related field |
| Work experience | Helpful but not always required | Often important; some programs expect several years of professional experience |
| Research background | Highly valued, especially writing samples, thesis work, publications, or research assistant experience | Useful, but applied problem-solving and leadership experience may matter more |
| Statement of purpose | Should identify research interests, faculty fit, and scholarly goals | Should explain career goals, practice problem, leadership focus, and intended impact |
| Recommendations | Often academic or research-focused | Often a mix of academic, supervisory, and professional references |
| Standardized tests | Many programs have made GRE requirements optional or removed them, but policies vary | Less likely to require standardized testing, though policies vary |
A strong PhD application usually shows that you understand the discipline's research questions and methods. A strong professional doctorate application usually shows that you have a real practice problem, leadership context, or system-level challenge you are prepared to address.
Before applying, prepare the following materials carefully:
- A focused statement that explains why the degree type fits your career goal, not just why you want a doctorate.
- A writing sample that matches the program's expectations, such as a research paper for a PhD or a policy/practice analysis for a professional doctorate.
- A faculty or program-fit rationale showing that the school can actually support your topic area.
- A realistic funding plan that includes tuition, fees, travel, lost income, technology, books, and dissertation or capstone costs.
- A timeline for balancing coursework, research, employment, family responsibilities, and professional licensing obligations if applicable.
How Long Does a PhD vs Professional Doctorate in Social Science Take, and Can You Work While Studying?
A PhD in social science commonly takes longer because students must complete advanced coursework, pass exams, develop an original study, collect or analyze data, and defend a dissertation. Professional doctorates are often structured for working adults and may have a more predictable sequence, especially when the capstone is integrated into coursework.
Recent national doctoral education data continue to show that research doctorates can require substantial time commitments, especially in humanities and social science fields where dissertation research may involve fieldwork, archives, interviews, longitudinal data, or complex institutional review processes. For readers, the practical takeaway is simple: advertised program length is not the same as realistic time to completion.
The table below provides a practical timeline comparison rather than a guarantee. Actual completion time depends on enrollment status, funding, dissertation scope, advisor availability, transfer credits, and whether the student changes topics.
| Time factor | PhD in Social Science | Professional Doctorate in Social Science |
| Typical structure | Full-time research apprenticeship, though part-time options exist in some fields | Often part-time, cohort-based, online, hybrid, or executive-format |
| Common completion range | Often about 5 to 7 years, and sometimes longer for dissertation-heavy paths | Often about 3 to 5 years, depending on course load and capstone design |
| Work compatibility | Harder in fully funded, full-time programs because assistantships and research obligations may be expected | Usually more compatible with full-time employment if designed for professionals |
| Main delay risk | Dissertation design, data access, advisor changes, publication expectations, funding limits | Capstone access, workplace approvals, leadership turnover, practicum or residency requirements |
| Best schedule fit | Students who can prioritize scholarship and research training | Professionals who need doctoral study to fit around an existing career |
If you plan to work while studying, do not rely only on the program's marketing language. Ask how many hours students typically spend each week on coursework, research, residencies, and final-project milestones.
Working professionals should take these steps before enrolling:
- Ask the program for recent completion-time ranges, not just the shortest possible timeline.
- Confirm whether classes are synchronous, asynchronous, weekend-based, hybrid, or residency-based.
- Ask whether your workplace can be used as a capstone site or research setting.
- Clarify whether assistantships, internships, practicum hours, or teaching obligations conflict with employment.
- Build a personal schedule that includes writing time, advisor meetings, data collection, and revision cycles.
How Much Does a PhD vs Professional Doctorate in Social Science Cost, and Which Offers Better Funding?
Cost is one of the biggest practical differences between the two pathways. A funded PhD may reduce tuition costs through assistantships, fellowships, or tuition remission, but it may also require full-time enrollment and lower short-term earnings. A professional doctorate may let you keep earning a salary, but tuition is often paid through personal funds, employer benefits, or loans.
Federal Student Aid rules for graduate and professional students allow up to $20,500 per academic year in Direct Unsubsidized Loans, with Grad PLUS Loans potentially covering remaining eligible cost of attendance after aid. That matters because a self-funded doctorate can create significant debt even when the program is flexible and career-relevant.
Students comparing applied social work doctorates should review total program price, not only per-credit tuition. For example, lists of affordable DSW programs can be useful starting points, but each school's fees, residency costs, and capstone expenses still need close review.
The table below explains the main cost drivers. Use it to compare total financial exposure rather than assuming one option is automatically cheaper.
| Cost or funding factor | PhD in Social Science | Professional Doctorate in Social Science |
| Tuition | May be covered or reduced in competitive funded programs; unfunded PhDs can be expensive | Often charged per credit or term and more commonly paid by the student |
| Stipends and assistantships | More common, especially in research universities | Less common, though some employer or institutional aid may exist |
| Opportunity cost | Can be high if full-time study limits career earnings for several years | May be lower if the student remains employed while studying |
| Hidden costs | Conference travel, research software, fieldwork, data access, dissertation expenses | Residencies, travel, technology fees, capstone implementation costs, professional memberships |
| Debt risk | Lower in fully funded programs, higher in unfunded or part-time options | Potentially higher if tuition is loan-financed and employer aid is limited |
To evaluate affordability, compare net cost and career utility together. A low-tuition program may still be a poor fit if it lacks your specialization, has weak advising, or does not support your target career. A higher-cost program may be defensible only if it clearly aligns with advancement, licensure-adjacent goals, leadership preparation, or employer-supported development.
Ask these funding questions before committing:
- Is tuition remission guaranteed, competitive, renewable, or dependent on assistantship availability?
- What is the full cost of attendance, including fees, residencies, travel, books, research expenses, and technology?
- What proportion of students receive assistantships, fellowships, employer reimbursement, or scholarships?
- Are funding years limited, and what happens if the dissertation or capstone takes longer than planned?
- Will the program's schedule allow you to keep working, and how would reduced work hours affect total ROI?
What Careers Can You Pursue With a PhD vs Professional Doctorate in Social Science?
Career outcomes depend on the field. A PhD in sociology, political science, public policy, economics, social work, or anthropology may lead to faculty roles, research institutes, government analysis, program evaluation, data-focused policy work, or nonprofit research leadership. A professional doctorate may lead to executive leadership, advanced clinical-administrative roles, social service management, public administration leadership, consulting, training, or organizational change work.
The table below maps common career directions by degree type. It does not mean only one degree can lead to each role; instead, it shows which doctorate usually provides the strongest preparation signal.
| Career path | Often better aligned with a PhD | Often better aligned with a professional doctorate |
| Tenure-track professor | Strong alignment, especially at research universities | Possible in some professional or teaching-focused programs, but less common for research-intensive roles |
| Policy researcher or think tank analyst | Strong alignment due to methods and publication training | Possible when the role emphasizes implementation, administration, or field expertise |
| Social service executive | Useful if the role includes research leadership or evaluation | Strong alignment because of leadership, systems, and applied practice focus |
| Program evaluator | Strong alignment for advanced research design and analysis | Strong alignment when evaluation is tied to program improvement and implementation |
| Public administration leader | Useful for policy research and academic public administration | Strong alignment for agency, municipal, nonprofit, or public-sector leadership |
| Consultant or trainer | Useful for research-based consulting and expert testimony | Strong alignment for organizational change, practice models, and executive advising |
Skills matter as much as the credential. Employers may value a doctorate most when it comes with evidence of measurable impact: publications, grants, data analysis, program redesign, policy implementation, teaching evaluations, supervision experience, or leadership results.
Doctoral students can strengthen career outcomes by building marketable evidence while enrolled:
- PhD students should aim for research assistantships, conference presentations, peer-reviewed publications, grant experience, teaching experience, and advanced methods skills.
- Professional doctorate students should document leadership outcomes, program improvements, supervision experience, evaluation projects, policy briefs, implementation plans, and measurable organizational results.
- Both groups should build communication skills, data literacy, ethical decision-making, stakeholder management, and the ability to translate evidence for nonacademic audiences.
Which Pays More: a PhD or Professional Doctorate in Social Science?
Neither degree automatically pays more. Salary outcomes are driven by occupation, industry, employer type, geography, seniority, and whether the role rewards research expertise, administrative authority, licensure, or executive responsibility. A PhD may pay more in quantitative policy, economics, political science, research leadership, or faculty roles. A professional doctorate may pay more when it supports promotion into senior administration, consulting, healthcare management, or executive nonprofit leadership.
BLS May 2024 wage data show why the degree label alone is not enough. Some social science research occupations report higher medians than many administrative roles, but leadership roles can exceed medians at senior levels depending on setting and responsibility.
| Occupation or role area | Relevant doctorate alignment | U.S. median annual wage context, May 2024 |
| Political scientists | Often PhD-aligned for research, policy, and academic pathways | About $139,380 |
| Economists | Often PhD-aligned, especially for advanced research and modeling roles | About $115,730 |
| Sociologists | Often PhD-aligned for research, evaluation, and academic roles | About $101,770 |
| Postsecondary teachers | Often PhD-aligned, though professional doctorates may qualify for some applied or teaching-focused roles | About $83,980 across postsecondary teaching roles |
| Social and community service managers | Often professional-doctorate-aligned for agency or nonprofit leadership | About $78,240 |
Use these numbers carefully. They are occupation medians, not doctorate-specific graduate outcomes. For example, a DSW graduate who becomes an agency executive in a high-cost metro area may earn more than the median for social and community service managers, while a PhD graduate in an early academic career role may earn less than experienced researchers in government or private-sector policy roles.
When comparing salary potential, look beyond the program's broad claims and ask for evidence tied to your target role:
- What roles do recent graduates actually hold, and are outcomes separated by PhD, DSW, DPA, EdD, or other doctorate type?
- Do graduates move into higher-paying roles because of the doctorate, or because they already had senior experience?
- Does your target employer reward doctoral credentials through promotion, pay bands, faculty rank, consulting eligibility, or leadership qualifications?
- Will the degree help you build scarce skills such as advanced statistics, grant writing, policy analysis, program evaluation, or executive leadership?
- How much debt would you take on, and how long would it take for realistic salary growth to offset that cost?
What Is the Job Outlook for PhD and Professional Doctorate Graduates in Social Science?
The job outlook is mixed because social science doctorates lead to many different labor markets. Academic hiring can be competitive, especially for tenure-track roles. Applied roles in policy analysis, human services leadership, program evaluation, public administration, and social research may offer broader options, but they often require practical experience in addition to the doctorate.
Recent BLS projections for 2024 to 2034 show continued demand in several doctorate-relevant areas, including postsecondary teaching, community and social service management, and research-oriented social science occupations. For readers, the important point is not that every doctoral graduate will have strong demand; it is that demand is strongest when the doctorate matches a specific occupational lane.
The table below shows how job-market fit differs by path.
| Market factor | PhD implications | Professional doctorate implications |
| Academic competition | Strong preparation for faculty roles, but tenure-track openings can be limited and highly competitive | May qualify for applied, clinical, adjunct, or teaching-focused roles, but may be less competitive for research-intensive faculty positions |
| Applied research demand | Strong fit for evaluation, policy research, data analysis, and research leadership | Good fit when paired with program evaluation, implementation, and field expertise |
| Leadership demand | Useful for research centers, academic departments, institutes, or policy organizations | Strong fit for agencies, nonprofits, public administration, healthcare-linked social services, and consulting |
| AI and automation | Increases the value of advanced methods, causal reasoning, ethics, and interpretation of complex data | Increases the value of leaders who can implement tools responsibly, evaluate outcomes, and manage human-centered systems |
| Online and hybrid education | Expands teaching opportunities but also increases competition across geographic boundaries | Supports working-adult doctoral access and may fit leadership professionals who cannot relocate |
AI is changing social science work, but it is not replacing the need for human judgment. Doctoral-level professionals are increasingly expected to understand data quality, privacy, bias, community impact, and ethical implementation. A PhD may provide stronger training in research validity, while a professional doctorate may provide stronger preparation for applying evidence in messy organizational environments.
To improve job-market readiness, choose a program that helps you produce visible outcomes before graduation:
- For academic goals, prioritize faculty mentorship, publication support, teaching opportunities, conference funding, and placement history.
- For applied research goals, prioritize methods training, internships, data tools, evaluation projects, and partnerships with agencies or policy organizations.
- For leadership goals, prioritize executive coaching, capstone implementation, management coursework, field partnerships, and measurable workplace impact.
How Do Accreditation, Licensure, and Employer Recognition Differ for PhD vs Professional Doctorate in Social Science?
Accreditation and licensure can determine whether a doctorate is useful, especially in fields tied to clinical practice, education, public administration, or social work. At minimum, choose a school with recognized institutional accreditation. Programmatic accreditation may also matter depending on the field, but requirements vary by profession and state.
In social work, for example, clinical licensure is typically built around the accredited MSW, supervised experience, and state examination requirements; a DSW or PhD does not automatically grant licensure. In psychology, licensure rules are much more specific and often require a program that meets state board expectations, supervised hours, and exams. In public administration or sociology, licensure may not be central, but employer recognition, research credibility, and institutional reputation may matter.
The table below summarizes what to verify before enrolling.
| Recognition issue | What to check | Why it matters |
| Institutional accreditation | Confirm the college or university is accredited by a recognized accreditor | Impacts federal aid eligibility, transferability, employer recognition, and academic credibility |
| Programmatic accreditation | Check whether your field has a recognized program-level accreditor or approval body | May affect licensure, certification, internships, or employer acceptance |
| State licensure rules | Review your state board's requirements before enrolling | Doctoral titles do not override state licensing rules |
| Employer recognition | Ask whether the doctorate qualifies for promotion, salary steps, faculty rank, or executive eligibility | Some employers reward only specific credentials or accredited programs |
| Online or hybrid format | Verify residency, practicum, fieldwork, and state authorization requirements | Online convenience does not always mean the program fits every state or career path |
Red flags include vague accreditation language, unclear licensure claims, missing faculty credentials, no published dissertation or capstone expectations, and admissions advisors who imply that a doctorate automatically leads to a specific license, promotion, or salary increase.
Before applying, take these verification steps:
- Search the school's accreditation status through official accreditation databases, not only the school website.
- Contact your state licensing board if the degree is related to clinical, counseling, education, or regulated practice.
- Ask employers or HR departments whether the doctorate is recognized for promotion or pay classification.
- Review faculty profiles to confirm expertise in your intended research or practice area.
- Request graduate outcome information, including job titles, sectors, and placement patterns where available.
Is a PhD or Professional Doctorate in Social Science Worth It for Your Career Goals?
A doctorate in social science is worth it when the degree directly supports a role you could not reasonably reach otherwise, or when it helps you build expertise that has clear professional value. It is less likely to be worth it if you are pursuing the title without a defined career path, ignoring debt, or assuming the credential alone will create a promotion.
Choose a PhD if your long-term goal is to conduct original research, teach in a research-oriented academic environment, publish scholarship, work in advanced policy analysis, or become a principal investigator. Choose a professional doctorate if your goal is senior practice leadership, agency administration, applied consulting, program innovation, public-sector management, or translating evidence into real-world change.
Some readers may not need a doctorate yet. If your goal is entry-level or mid-level human services advancement, an accelerated human services degree online or master's-level pathway may offer a faster and lower-cost route before doctoral study becomes necessary.
The decision framework below can help you avoid overinvesting in the wrong credential.
| Your goal | Better-fit path | Why |
| Become a research professor | PhD | Research training, dissertation expectations, publications, and faculty mentorship align with academic hiring |
| Lead a social service agency | Professional doctorate | Applied leadership, systems change, and program evaluation are directly relevant |
| Work in a think tank or policy research role | Often PhD | Advanced methods and research credibility are usually central |
| Move into executive consulting | Often professional doctorate | Practice expertise, leadership record, and applied project work may matter more than scholarly theory |
| Improve clinical or community practice systems | Professional doctorate, with licensure requirements checked separately | Applied scholarship can support practice innovation, but licensure depends on state rules and prior credentials |
| Keep options open between academia and practice | Depends on program design | Look for programs with both research rigor and applied partnerships |
Common mistakes can make either path less valuable. The most costly errors are choosing based only on prestige, ignoring funding, misunderstanding licensure, and comparing salaries without looking at occupations.
- Do not assume a PhD is always more respected; in applied settings, a professional doctorate with strong leadership outcomes may be more relevant.
- Do not assume a professional doctorate is easier; applied capstones can be demanding because they require organizational access, stakeholder management, and measurable implementation.
- Do not compare tuition only; compare total cost, debt, lost income, employer aid, completion risk, and realistic salary movement.
- Do not choose a program before identifying your target job titles and checking whether alumni actually enter those roles.
- Do not ignore advisor fit; poor mentorship can delay completion in both dissertation and capstone models.
A practical final test is this: if your dream work is asking new social science questions and publishing answers, lean PhD. If your dream work is leading systems, improving programs, and applying evidence in practice, lean professional doctorate. If neither statement feels right yet, gain more field experience or complete a lower-cost graduate credential before committing to doctoral study.
Other Things You Should Know About Social Science
Yes, graduates of recognized doctoral programs generally may use the title "Dr." in academic and professional contexts. However, in clinical or public-facing settings, you should represent your credential clearly so clients, patients, students, or employers do not confuse it with a medical degree or a license you do not hold.
It can be, especially when the school is properly accredited, the curriculum is rigorous, and the degree aligns with the role. Employer recognition depends more on accreditation, reputation, field relevance, capstone quality, and your professional experience than on online delivery alone.
Yes, particularly in practice-oriented, adjunct, clinical, professional, or teaching-focused programs. For tenure-track roles at research universities, a PhD is often preferred because it emphasizes original research, publication, and disciplinary scholarship.
Often, yes. A master's degree can clarify your specialization, strengthen your application, and help you decide whether you prefer research, clinical practice, administration, policy, or teaching. In some fields, the master's is also the key credential for licensure or career entry.
References
- Complete Guide to Scholarships & Grants [2026 Update] https://www.applykite.com/blog/phd-guide-funding
- Thesis vs. Dissertation: What’s the difference? | AJE https://blog.aje.com/en/thesis-vs-dissertatio
- PHD Tuition Fees & Funding https://www.sciencespo.fr/ecole-recherche/en/academics/phd/tuition-fees-funding/
- PhD vs Doctorate: Key Differences & 2026 Admissions Guide https://smartcgpa.com/blog/phd-vs-doctorate-differences
- Doctorate vs PhD: Key Differences Explained (2026 Guide) https://zoclearnings.com/blogs/doctorate-vs-phd/
- Deciding Between a PhD and a Professional Doctorate: What’s Right for You? - Academic Renegade News https://academicrenegade.news/phd-vs-doctorate/
- Educational Funding https://phdproject.org/educational-funding/
- How Much Does a PhD Cost https://aituedu.org/how-much-does-a-phd-cost/
- PhD vs Professional Doctorate: What's the Difference? (2026) https://onlydifferences.com/phd-vs-professional-doctorate/
- Masters Thesis vs. PhD Dissertation: Key Differences - Wordvice https://wordvice.com/blog/dissertation-vs-thesis-key-differences/
