The aim of scientific research is to produce generalizable knowledge about the real world. Without high external validity, you cannot apply results from the laboratory to other people or the real world. These results will suffer from research biases like undercoverage bias. In qualitative studies, external validity is referred to as ...
Validity, reliability, and generalizability in qualitative research
In assessing validity of qualitative research, the challenge can start from the ontology and epistemology of the issue being studied, e.g. the concept of "individual" is seen differently between humanistic and positive psychologists due to differing philosophical perspectives: Where humanistic psychologists believe "individual" is a ...
Validity in Qualitative Research: A Processual Approach
Some researchers prefer to adopt the same criteria of internal and external validity in qualitative research. Examples are the works of Aubin-Auger et al. (2008), Ergene, Yazici and Delice (2016), and Miles and Huberman (1984). However, this does not seem to be the standard. On the contrary, several authors prefer to propose and adopt different
Validity in Qualitative Evaluation: Linking Purposes, Paradigms, and
Creswell and Millers' work advances the debate on validity in qualitative research in several ways. It elegantly unites different worldviews or paradigms within qualitative research with key perspectives by which the validity of qualitative research can be assessed: that of the researcher, the respondent, and the external reader.
Internal and external validity: can you apply research study results to
The validity of a research study includes two domains: internal and external validity. Internal validity is defined as the extent to which the observed results represent the truth in the population we are studying and, thus, are not due to methodological errors. In our example, if the authors can support that the study has internal validity ...
Internal, External, and Ecological Validity in Research Design, Conduct
The concept of validity is also applied to research studies and their findings. Internal validity examines whether the study design, conduct, and analysis answer the research questions without bias. External validity examines whether the study findings can be generalized to other contexts. Ecological validity examines, specifically, whether the ...
External Validity
The aim of scientific research is to produce generalisable knowledge about the real world. Without high external validity, you cannot apply results from the laboratory to other people or the real world. In qualitative studies, external validity is referred to as transferability.
Issues of validity and reliability in qualitative research
Although the tests and measures used to establish the validity and reliability of quantitative research cannot be applied to qualitative research, there are ongoing debates about whether terms such as validity, reliability and generalisability are appropriate to evaluate qualitative research.2-4 In the broadest context these terms are applicable, with validity referring to the integrity and ...
A conceptual framework for external validity
The lack of emphasis on external validity impedes the ability of clinical research to translate into practice in a number of ways [18], [19]. The gap between scientific knowledge and clinical practice that is attributable to poor external validity may be due to the experimental setting; the selection of trial participants; or discrepancies ...
Redefining Qualitative Methods: Believability in the Fifth Moment
To enhance the validity of qualitative research, researchers recommend the use of validity checklists (Creswell & Miller, 2000; Maxwell, 1996; Lincoln & Guba, 1985; Whittemore, Chase, & Mandle, 2001). A validity checklist assists the researcher in establishing techniques that will be used for the duration of the research to strengthen validity ...
International Journal of Qualitative Methods Validity in Qualitative
Abstract. This article provides a discussion on the question of validity in qualitative evaluation. Although validity in qualitative inquiry has been widely reflected upon in the methodological literature (and is still often subject of debate), the link with evaluation research is underexplored. Elaborating on epistemological and theoretical ...
(PDF) Understanding and Validity in Qualitative Research
related validity, internal and external validity) are based on positivist assumptions that underlie quantitative and experimental research designs (Salner, 1989). Qualitative researchers have
Quality in qualitative research: Through the lens of validity
external validity, is less of a central concern in qualitative research as opposed to generating rich and contextual understanding about specific cases (Maxwell, 1992) . While statistical
External validity
External validity is the validity of applying the conclusions of a scientific study outside the context of that study. In other words, it is the extent to which the results of a study can generalize or transport to other situations, people, stimuli, and times. ... Qualitative research. Within the qualitative research paradigm, external validity ...
Rigor or Reliability and Validity in Qualitative Research: P ...
nts the concept of rigor in qualitative research using a phenomenological study as an exemplar to further illustrate the process. Elaborating on epistemological and theoretical conceptualizations by Lincoln and Guba, strategies congruent with qualitative perspective for ensuring validity to establish the credibility of the study are described. A synthesis of the historical development of ...
Processual Validity in Qualitative Research in Healthcare
However, a major concern regarding qualitative research is the great variety of epistemic, philosophical, and ontological aspects involved. 13,14,18 Recent evidence suggests that some structured ways of dealing with the diverse quality dimensions of qualitative research, such as internal and external validity, reliability, objectivity ...
Internal Validity vs. External Validity in Research
Differences. The essential difference between internal validity and external validity is that internal validity refers to the structure of a study (and its variables) while external validity refers to the universality of the results. But there are further differences between the two as well. For instance, internal validity focuses on showing a ...
(PDF) Validity and Reliability in Qualitative Research
Validity and reliability or trustworthiness are fundamental issues in scientific research whether qualitative, quantitative, or mixed research. It is a necessity for researchers to describe which ...
The Importance of External Validity
It has been frequently argued that internal validity is the priority for research.4 However, in an applied discipline, the purpose of which includes working to improve the health of the public, it is also important that external validity be emphasized and strengthened.5 - 7 For example, it is important to know not only that a program is effective, but that it is likely to be effective in ...
External Validity
External Validity. (Generalizability) -to whom can the results of the study be applied-. There are two types of study validity: internal (more applicable with experimental research) and external. This section covers external validity. External validity involves the extent to which the results of a study can be generalized (applied) beyond ...
External Validity: The Next Step for Systematic Reviews?
Emily Sama-Miller is a senior researcher at Mathematica Policy Research, Inc. She directs two federally-sponsored systematic evidence (the Home Visiting Evidence of Effectiveness review and the Employment Strategies for Low-Income Adults Evidence review) and has led topic area reviews on two others (the What Works Clearinghouse and the Clearinghouse for Labor Evaluation and Research).
COMMENTS
The aim of scientific research is to produce generalizable knowledge about the real world. Without high external validity, you cannot apply results from the laboratory to other people or the real world. These results will suffer from research biases like undercoverage bias. In qualitative studies, external validity is referred to as ...
In assessing validity of qualitative research, the challenge can start from the ontology and epistemology of the issue being studied, e.g. the concept of "individual" is seen differently between humanistic and positive psychologists due to differing philosophical perspectives: Where humanistic psychologists believe "individual" is a ...
Some researchers prefer to adopt the same criteria of internal and external validity in qualitative research. Examples are the works of Aubin-Auger et al. (2008), Ergene, Yazici and Delice (2016), and Miles and Huberman (1984). However, this does not seem to be the standard. On the contrary, several authors prefer to propose and adopt different
Creswell and Millers' work advances the debate on validity in qualitative research in several ways. It elegantly unites different worldviews or paradigms within qualitative research with key perspectives by which the validity of qualitative research can be assessed: that of the researcher, the respondent, and the external reader.
The validity of a research study includes two domains: internal and external validity. Internal validity is defined as the extent to which the observed results represent the truth in the population we are studying and, thus, are not due to methodological errors. In our example, if the authors can support that the study has internal validity ...
The concept of validity is also applied to research studies and their findings. Internal validity examines whether the study design, conduct, and analysis answer the research questions without bias. External validity examines whether the study findings can be generalized to other contexts. Ecological validity examines, specifically, whether the ...
The aim of scientific research is to produce generalisable knowledge about the real world. Without high external validity, you cannot apply results from the laboratory to other people or the real world. In qualitative studies, external validity is referred to as transferability.
Although the tests and measures used to establish the validity and reliability of quantitative research cannot be applied to qualitative research, there are ongoing debates about whether terms such as validity, reliability and generalisability are appropriate to evaluate qualitative research.2-4 In the broadest context these terms are applicable, with validity referring to the integrity and ...
The lack of emphasis on external validity impedes the ability of clinical research to translate into practice in a number of ways [18], [19]. The gap between scientific knowledge and clinical practice that is attributable to poor external validity may be due to the experimental setting; the selection of trial participants; or discrepancies ...
To enhance the validity of qualitative research, researchers recommend the use of validity checklists (Creswell & Miller, 2000; Maxwell, 1996; Lincoln & Guba, 1985; Whittemore, Chase, & Mandle, 2001). A validity checklist assists the researcher in establishing techniques that will be used for the duration of the research to strengthen validity ...
Abstract. This article provides a discussion on the question of validity in qualitative evaluation. Although validity in qualitative inquiry has been widely reflected upon in the methodological literature (and is still often subject of debate), the link with evaluation research is underexplored. Elaborating on epistemological and theoretical ...
related validity, internal and external validity) are based on positivist assumptions that underlie quantitative and experimental research designs (Salner, 1989). Qualitative researchers have
external validity, is less of a central concern in qualitative research as opposed to generating rich and contextual understanding about specific cases (Maxwell, 1992) . While statistical
External validity is the validity of applying the conclusions of a scientific study outside the context of that study. In other words, it is the extent to which the results of a study can generalize or transport to other situations, people, stimuli, and times. ... Qualitative research. Within the qualitative research paradigm, external validity ...
nts the concept of rigor in qualitative research using a phenomenological study as an exemplar to further illustrate the process. Elaborating on epistemological and theoretical conceptualizations by Lincoln and Guba, strategies congruent with qualitative perspective for ensuring validity to establish the credibility of the study are described. A synthesis of the historical development of ...
However, a major concern regarding qualitative research is the great variety of epistemic, philosophical, and ontological aspects involved. 13,14,18 Recent evidence suggests that some structured ways of dealing with the diverse quality dimensions of qualitative research, such as internal and external validity, reliability, objectivity ...
Differences. The essential difference between internal validity and external validity is that internal validity refers to the structure of a study (and its variables) while external validity refers to the universality of the results. But there are further differences between the two as well. For instance, internal validity focuses on showing a ...
Validity and reliability or trustworthiness are fundamental issues in scientific research whether qualitative, quantitative, or mixed research. It is a necessity for researchers to describe which ...
It has been frequently argued that internal validity is the priority for research.4 However, in an applied discipline, the purpose of which includes working to improve the health of the public, it is also important that external validity be emphasized and strengthened.5 - 7 For example, it is important to know not only that a program is effective, but that it is likely to be effective in ...
External Validity. (Generalizability) -to whom can the results of the study be applied-. There are two types of study validity: internal (more applicable with experimental research) and external. This section covers external validity. External validity involves the extent to which the results of a study can be generalized (applied) beyond ...
Emily Sama-Miller is a senior researcher at Mathematica Policy Research, Inc. She directs two federally-sponsored systematic evidence (the Home Visiting Evidence of Effectiveness review and the Employment Strategies for Low-Income Adults Evidence review) and has led topic area reviews on two others (the What Works Clearinghouse and the Clearinghouse for Labor Evaluation and Research).