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Quantitative Research Methodology
Research can be conducted through many different forms. This paper will focus on
quantitative research. This paper will define quantitative research and discuss methods that can
be used for it. This paper will also address some of the advantages and disadvantages of
quantitative research.
Quantitative Research
Unlike qualitative research, quantitative research relies heavily on numbers and statistics
(Crawford, 2023, p. 68). It is classified as quantitative research by the set of approaches that
produce these numerically represented outcomes (American Psychological Association [APA],
2020, p. 4). Quantitative research is deductive and seeks objectivity through studies related to the
topic and testable hypotheses (Crawford, 2023, p.68). A standard quantitative research article
will follow the same format of an introduction, an in-depth description of the method used, data
analyzed, the research process, the results, and a closing discussion of the study (American
Psychological Association [APA], 2020, p. 4).
Quantitative Research Methods
Several methods can be utilized when obtaining quantitative research. Quantitative and
qualitative research can be used together as mixed methods research (Crawford, 2023, p. 85). A
few of the approaches to quantitative research will be discussed in this paper.
Correlational Research
Correlational research methods view the relationship between whatever variables you are
researching (Crawford, 2023, p. 69). It is important to note that correlation does not equate to
causation. As a standard, correlational research is conducted without directly manipulating
variables. Correlation can be positive or negative. For instance, if a variable increases and the
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corresponding variable(s) also increases, this would have a positive correlation (Crawford, 2023,
p.69). If the variable(s) decreases as the opposing variable increases, this will reflect a negative
correlation (Crawford, 2023, p. 69).
Survey Research
The survey research methodology can be used by both quantitative, qualitative, or mixed
methods approaches and is a type of descriptive research. However, for a survey to be
quantitative, the questionnaire must be scalable. For example, the Patient Health Questionnaire
(PHQ-9) is the standard questionnaire and subsequent scoring system for depression. This
questionnaire is designed so that each question equals a certain number of points, which then are
tallied up to determine where you fall in the depression scoring system. For data analysis, one
could look at the results of this questionnaire divided into percentages based on demographics,
etcetera. Hypotheses can be formed from such information. An example of this is college
freshmen and the depression rates among them, possibly resulting from being away from home
for the first time and feeling isolated (Crawford, 2023, p. 50).
Experimental Research
When researchers aim to understand the cause and effect of specific issues, events,
circumstances, etcetera, they commonly utilize experimental research. Experimental research
involves a hypothesis and variables that can be measured, calculated, and compared in a
controlled setting (Ghanad, 2023). The aim is to identify the relationship between variables and
the data must be quantifiable. The process begins with identifying and defining the variables and
their relationships. Next, the researcher formulates clear, testable predictions (Ghanad, 2023).
The third step assesses both the detail level and the external validity of the findings, based on
how precisely the independent variables are manipulated (Ghanad, 2023). The final step
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evaluates the internal validity of the experiment, considering factors such as randomization, and
experimental controls (Ghanad, 2023).
Advantages
Quantitative research methodologies offer several advantages that enhance the
effectiveness of their studies. One key benefit is the ability to use statistical measurements,
which help researchers analyze results, effects, and correlations in depth. Quantitative research is
grounded in measurable data rather than subjective opinions or perceptions (Ghanad, 2023).
Another advantage is that quantitative research helps minimize bias within studies.
Researchers can utilize various strategies to reduce bias, including carefully designed sampling
methods, ensuring reliability and validity, and using systematic data collection techniques
(Ghanad, 2023). Since quantitative research does not predetermine outcomes, it allows
researchers to test hypotheses, select variables, and gather data in a way that mitigates bias and
supports objective analysis (Ghanad, 2023).
Disadvantages
Despite its numerous advantages, quantitative research also has its share of
disadvantages. One main disadvantage is that external factors beyond the researcher's control can
influence results throughout the research process. Extraneous variables are uncontrolled
variables that affect the dependent variable(s), whereas nuisance variables can affect all parties
and are not welcomed (Crawford, 2023, p. 182).
Another challenge quantitative research poses is inconsistency. This issue can distort
results and leave researchers with ambiguous conclusions regarding their hypotheses. Different
research designs, such as between-subjects and within-subjects, can contribute to this problem by
requiring larger sample sizes, potentially causing participant fatigue or leading to higher attrition
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rates (Crawford, 2023, p. 228). Fatigue can be reduced by breaking up research sessions, and
attrition can be mitigated by incentivization to complete the assigned study (Crawford, 2023, p.
229).
Conclusion
This paper has achieved its goal of defining qualitative research. A few different
approaches to quantitative research have been addressed. This paper has also addressed the
advantages and disadvantages of quantitative research and its methods.
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References
American Psychological Association. (2020). Publication manual of the American Psychological
Association (7th ed.). https://doi.org/10.1037/0000165-000
https://libertyonline.vitalsource.com/books/9781433832185
Crawford, A. R. (2023).FIntroduction to research: Less fright, more insightF(Custom 4thFed.).
Kendall Hunt. https://libertyonline.vitalsource.com/books/9798385105748
Ghanad, A. (2023, August 8). An overview of quantitative research methods. International
Journal of Multidisciplinary Research and Analysis, 6(8), 3794-3803.
https://doi.org/10.47191/ijmra/v6-i8-52
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