In many PhD theses, research proposals, and empirical papers, students are asked to develop both a theoretical framework and a conceptual framework. However, these two terms are often confused. Some researchers use them interchangeably, while others treat them as clearly different components of research design. This confusion is common because both frameworks help guide the study, justify the research direction, and connect the research problem to existing knowledge.

A simple way to understand the difference is this: the theoretical framework explains the study through an established theory or set of theories, while the conceptual framework shows how the key concepts, variables, or constructs of the study are connected. The theoretical framework answers, "Which theory explains the phenomenon?" The conceptual framework answers, "How are the main elements of this study expected to relate to each other?"

What Is a Theoretical Framework?

A theoretical framework is the use of an existing theory to explain, interpret, or predict the phenomenon being studied. It provides the scholarly lens through which the researcher understands the research problem. In social science research, theories such as the Theory of Planned Behaviour, Social Cognitive Theory, Institutional Theory, Resource-Based View, Technology Acceptance Model, Diffusion of Innovation Theory, and Stakeholder Theory are commonly used to frame empirical studies.

Varpio et al. describe theory, theoretical frameworks, and conceptual frameworks as related but distinct tools in research. Their article is widely cited because it clarifies that theory provides an explanatory system, while a theoretical framework uses theory to guide a particular study. (PubMed)

For example, if a researcher studies the adoption of AI-based learning systems among teachers, the Technology Acceptance Model may be used as the theoretical framework. This theory helps explain why teachers may accept or reject a technology based on perceived usefulness, perceived ease of use, and related technology beliefs. In this case, the theoretical framework gives the study its academic foundation.

A theoretical framework is especially important because it prevents the research from becoming merely descriptive. It allows the researcher to explain why certain variables or concepts matter and how the study contributes to theory development, theory testing, or theory extension.

What Is a Conceptual Framework?

A conceptual framework is the researcher's structured representation of the key concepts, variables, constructs, or relationships in the study. It is often presented as a diagram, model, or narrative explanation. In quantitative research, it usually shows the independent variables, dependent variable, mediators, moderators, and hypothesised relationships. In qualitative research, it may show the main concepts, assumptions, contextual factors, or sensitising concepts that guide inquiry.

Jabareen defines a conceptual framework as a network of linked concepts and proposes a method for building conceptual frameworks, especially for multidisciplinary phenomena. This is useful in social sciences because many research problems involve multiple concepts, contexts, and bodies of literature. (Sage Journals)

Miles and Huberman's work is also influential because it treats the conceptual framework as a visual or written product that explains the main things to be studied, including key factors, variables, and presumed relationships. (Engineering Education Research Program)

For example, in a study on employee performance, the conceptual framework may show that transformational leadership, organisational culture, and employee engagement influence employee performance, with job satisfaction acting as a mediator. This framework may be informed by several theories, but the conceptual framework itself is the researcher's study-specific model.

The Core Difference

The theoretical framework is usually broader and theory-driven. It comes from established scholarly theories. The conceptual framework is more study-specific and model-driven. It shows how the researcher organises the study's major concepts or variables.

For example, a researcher studying online purchase intention may use the Theory of Planned Behaviour as the theoretical framework. The conceptual framework may then include attitude, subjective norms, perceived behavioural control, trust, and perceived risk as predictors of online purchase intention. The theory provides the foundation, while the conceptual framework presents the actual model to be tested.

Imenda's article is one of the most cited discussions on this issue. He argues that theoretical and conceptual frameworks are not simply synonyms. The theoretical framework is anchored in existing theory, while the conceptual framework may be built from concepts, prior studies, and the researcher's understanding of the research problem. (WIT Center of Research and Development)

Example 1: Quantitative Social Science Study

Consider this research title:

The Effects of Digital Literacy, Teacher Readiness, and Trust in AI on AI-Based Learning System Adoption in Malaysian Secondary Schools

The theoretical framework could be based on the Technology Acceptance Model or the Unified Theory of Acceptance and Use of Technology. These theories explain technology adoption and user acceptance.

The conceptual framework would show the actual variables of the study. For example:

• Digital Literacy → AI-Based Learning System Adoption
• Teacher Readiness → AI-Based Learning System Adoption
• Trust in AI → AI-Based Learning System Adoption
• Institutional Support as a Moderator

In this example, the theoretical framework explains why acceptance and readiness matter, while the conceptual framework shows the specific relationships that will be tested.

Example 2: Qualitative Social Science Study

Consider this title:

Exploring the Experiences of Indigenous School Leaders in Practising Culturally Responsive Leadership in Rural Malaysia

The theoretical framework could be Culturally Responsive School Leadership Theory. This theory helps explain how leadership practices can respond to students' cultural identities, community values, and educational needs.

The conceptual framework may include key concepts such as school leadership practices, Indigenous culture, community engagement, teacher support, and student inclusion. In a qualitative study, the conceptual framework does not always show variables and arrows. Instead, it may show the main areas of inquiry that guide interviews, observations, and thematic analysis.

This distinction is important because qualitative conceptual frameworks are often flexible and may evolve as the researcher engages with the field.

Example 3: Mixed-Methods Study

Consider this title:

Assessing Stroke Caregivers' Acceptance of a Mobile Health Application and Exploring Barriers to Digital Health Use in Malaysia

The theoretical framework could combine the Theoretical Framework of Acceptability and UTAUT. These theories explain acceptability, perceived usefulness, effort expectancy, social influence, and behavioural intention.

The conceptual framework could show two connected components. The quantitative component may test relationships between digital health literacy, acceptability, and willingness to use the application. The qualitative component may explore caregiver challenges, contextual barriers, emotional concerns, and practical limitations.

Here, the theoretical framework provides the foundation for measurement, while the conceptual framework shows how the quantitative and qualitative components connect.

Why the Theoretical Framework Matters

The theoretical framework strengthens the academic credibility of the study. It helps the researcher explain the phenomenon using established scholarly knowledge. It also supports hypothesis development, interpretation of findings, and theoretical contribution.

For example, if a study uses the Resource-Based View to examine SME performance, the researcher can argue that internal resources such as managerial competencies, innovation capability, and knowledge management contribute to competitive advantage. Without the theoretical framework, the study may simply list variables without explaining why they are academically meaningful.

A strong theoretical framework helps answer these questions:

• Which theory explains the research problem?
• Why is this theory suitable for the study?
• How does the theory support the selection of variables or concepts?
• How will the study test, extend, or apply the theory?

Why the Conceptual Framework Matters

The conceptual framework helps organise the study. It provides the logical structure that connects the research problem, literature review, objectives, questions, hypotheses, methodology, and analysis.

Ravitch and Riggan describe conceptual frameworks as central to aligning the literature review, research design, and methodology. Their work is widely used because it treats the conceptual framework not only as a diagram but also as a reasoning tool that guides the whole study. (Google Books)

A strong conceptual framework helps answer these questions:

• What are the main concepts, constructs, or variables in the study?
• How are these elements expected to relate to one another?
• Which relationships will be tested or explored?
• How does the framework align with the research objectives and questions?
• How does it guide data collection and data analysis?

Can a Study Have Both?

Yes. In fact, most strong PhD theses and empirical papers should have both, although the way they are presented may differ by university, discipline, and journal.

The theoretical framework provides the theory-based foundation. The conceptual framework provides the study-specific model. In quantitative research, the conceptual framework usually becomes the basis for hypotheses. In qualitative research, it may guide the scope of inquiry and interpretation. In mixed-methods research, it helps connect different phases of data collection and analysis.

For example:

The theory gives the foundation. The conceptual framework translates that foundation into the actual study model.

• Theoretical framework: Theory of Planned Behaviour
• Conceptual framework: Attitude, subjective norms, perceived behavioural control, perceived risk reduction, and trust in conservation management influence willingness to pay for ecosystem conservation.

Common Mistakes Students Make

One common mistake is presenting only a diagram and calling it the theoretical framework. A diagram of variables is usually a conceptual framework, not a theoretical framework, unless it clearly explains the underlying theory.

Another mistake is mentioning a theory without explaining how it relates to the study. For example, simply saying "This study is underpinned by Institutional Theory" is not enough. The researcher must explain which assumptions of Institutional Theory are relevant and how they justify the variables, research questions, or interpretation.

A third mistake is developing a conceptual framework that does not match the research objectives or hypotheses. If the objective says the study examines mediation, the conceptual framework should clearly show the mediating variable. If the study examines moderation, the moderator should be shown clearly.

How to Write the Theoretical Framework Section

A theoretical framework section should begin by introducing the selected theory or theories. Then it should explain the key assumptions of the theory, justify why the theory is suitable, and show how it supports the study's variables, relationships, or phenomenon.

For example:

This study is underpinned by the Theory of Planned Behaviour, which explains behavioural intention through attitude, subjective norms, and perceived behavioural control. The theory is suitable for this study because willingness to pay for ecosystem conservation represents an intention-based behaviour influenced by personal evaluation, perceived social pressure, and perceived control.

This type of writing shows that the theory is not merely named; it is actively used to support the research logic.

How to Write the Conceptual Framework Section

A conceptual framework section should explain the model of the study. It should define the key variables or concepts, describe the expected relationships, and show how the model was developed from theory and literature.

For example:

The conceptual framework proposes that subjective norms, moral norms, perceived behavioural control, trust in conservation management, and perceived risk reduction influence local communities' willingness to pay for ecosystem conservation. Education is included as a moderating variable because educational attainment may shape environmental awareness and decision-making capacity.

This explanation should usually be followed by a diagram showing the proposed relationships.

Practical Table: Theoretical Framework vs. Conceptual Framework

Conclusion

The theoretical framework and conceptual framework are related, but they are not the same. The theoretical framework provides the scholarly lens by drawing on established theories. The conceptual framework presents the researcher's specific model of the study by showing the key concepts, variables, or relationships.

In simple terms, the theoretical framework is the academic foundation, while the conceptual framework is the research model. A strong study needs both: theory to explain why the study matters and a conceptual framework to show how the study will be conducted.

For PhD students and empirical researchers, understanding this distinction is essential. It improves the quality of the proposal, strengthens the literature review, supports methodological alignment, and helps clarify the study's contribution to knowledge.

Key References

• Imenda, S. (2014). Is there a conceptual difference between theoretical and conceptual frameworks? Journal of Social Sciences, 38(2), 185–195. (WIT Center of Research and Development)
• Jabareen, Y. (2009). Building a conceptual framework: Philosophy, definitions, and procedure. International Journal of Qualitative Methods, 8(4), 49–62. (Sage Journals)
• Miles, M. B., Huberman, A. M., & Saldaña, J. (2014). Qualitative Data Analysis: A Methods Sourcebook. SAGE. (Métodos)
• Ravitch, S. M., & Riggan, M. (2017). Reason & Rigor: How Conceptual Frameworks Guide Research. SAGE. (Google Books)
• Varpio, L., Paradis, E., Uijtdehaage, S., & Young, M. (2020). The distinctions between theory, theoretical framework, and conceptual framework. Academic Medicine, 95(7), 989–994. (PubMed)