Qualitative research methods are conducted in a natural setting that allows for an in-depth analysis to find meaning and are taken in the form of words, sounds, pictures or objects. This allows for precise recordings of events and any consequences that may have occurred as a direct or indirect effect of such an event. Quantitative research methods are precise and focus on a specific topic at hand. It does this by largely depending on specific measurements, analysis and interpretation of numerical and non-numerical data. I will be comparing each type of research method and the different methods used within them, the differences between qualitative and quantitative as well as the methodologies, epistemologies, and ethical issues that are involved with the research methods.
When
using qualitative research methods a precise question or hypothesis does not
need to be in mind but a general topic of interest that you would like to
conduct an experiment on (Willig, 2001). This may become a difficulty though as
all research proposals are reviewed by special committees who like to know
exactly what and why you are doing the particular experiment. This is why
research is based on well thought out and justifiable principles that are
relevant to the research. Qualitative researchers take an interpretative
approach whilst being subjective. This allows the researcher to have an
increased understanding of the meaning behind what is being observed and
recorded. These methodologies contribute to the in-depth analysis to have a
greater specificity of a smaller number of participants (Willig, 2001). Qualitative
research does not require a large number of participants as it is rather
exploratory and is not sure what it may uncover so may change as research
continues. It is aiming to uncover the larger picture behind an event and is
interested in the more humanistic point of view, opinions, experiences and
attitudes of the participants rather than solid facts that can be used for
generalisability (Willig, 2001). Qualitative research is often used as a
starting point to look further into a topic, which may not be as well
understood. Such topics like cultural values and social behaviour require
in-depth interviewing and intense observation as such qualitative research
methods should be used as it is capable of collecting sensitive data that
quantitative data cannot.
Unlike
qualitative research methods quantitative research methods use ‘The Scientific
Method’ to systemically acquire information about behaviour and other phenomena
to be researched. This method is done firstly by defining a question or
hypothesis to be answered, then by creating a way of measuring or a way to
prove the hypothesis, create a study plan for how the research will be
conducted, decide on the sample that will be analysed, collect data, analyse
data collected and interpret this data.
Qualitative methods
are often associated with the aim for social development. Some qualitative
research methods include observation, ethnography, interviewing, action
research and participatory research. Observational research is used for most
psychological research whether it be structured or unstructured. These
experiments may be recorded, either video or audio which is an advantage as the
researcher can play back and listen or watch recordings to find anything which
may have been missed (Flick, 2009). Ethnography is concerned with gaining an
understanding of people and communities in their environment and does this by
observing, talking to people in these communities, asking questions and coming
to conclusions. Interviews can be structured where all questions are specific
and the researcher guides the researched, semi-structured where the researcher
half guides the researched but allows for other input, and unstructured where
the researcher allows the researched to have control over the interview and
discuss what they like (Flick, 2009). Action research is motivated by a desire
for social change, and often involves questions that relate to an entire
community or even nation.
When
qualitative researchers are analysing data there are five methods of analysis,
which are grounded theory, content analysis, interpretive phenomenology,
thematic discourse analysis and Foucauldian discourse analysis. Grounded theory
is used to analyse what is said only and is organised into categories that are
used for comparative analysis. From these categories and comparative analysis a
theory is then created (Coffey, Atkinson, 1996). Content analysis involves looking at what has been
said by who and the frequency of this occurrence to bring out significance.
This data is now in the form of quantitative data is analysed and conclusions
are made. Interpretive phenomenology is interpreting exactly what someone has said
and finding meaning. Thematic discourse analysis infers meaning from text and
interprets these findings. They then ask questions about the text and analyse
trying to find answers, which allows conclusions to be made.
There are three
types of research methods for quantitative research they are experimental
designs, correlational designs and descriptive designs. An experimental design
includes being able to manipulate an outcome, may have a control group but not
always, participants are assigned to different groups or conditions on the
basis of chance, it uses statistical analysis to confirm the hypothesis and the
ability to replicate the experiment again and produce the same or similar
findings. In some occasions a placebo may be used or a double-blind to prevent
bias from occurring. Correlational designs or method is aimed to find to what
extent or even at all if two variables are related. They determine correlations
of data of experiments, case studies or surveys. Although it may or may not
find a correlation this does not imply causation.
The
methods of analysis for quantitative data are statistical analysis both
descriptive and inferential statistics, which include the standard deviation,
T-test, correlation, chi-square, mode, mean, and median which are used for
central tendency. The researcher must also be aware that participants may not
have filled out such things like surveys or answered truthfully, which can lead
to possible flaws and inadequacy of data collection and reliable data.
From
a qualitative perspective the positivism approach is taken, that meaning exists
in the world and that our knowledge is a reflection of reality. Positivist
research involves predicting general patterns of human activity by empirical
observations of individual behaviour. Whereas, when analysing data quantitative
researchers use an interpretisvism approach where our meaning comes from the
way we interpret the world. What we know can only come from our interpretations
of what we have discovered. As quantitative data is in the form of numerical
data this interpretation of the results is much more reliable but only if our
interpretations are correct.
Some of the
differences between the two types of methods are that qualitative research is
in-depth, larger amounts of information is collected from each subject,
captures and discovers meaning once the researcher becomes immersed in the
data, that concepts are in the form of themes and generalisations, measures are
often specific to the individual setting or researcher, data are in the form of
words and images from documents, observations and transcripts, theory can be
casual or non-casual, research procedures are particular and replication is
unlikely, analysis proceeds by extracting themes or generalisations from
evidence and organizing data to present a coherent consistent picture. Whereas
quantitative research is concerned with breadth, smaller amounts of information
collected from each subject, tests a hypothesis that the researcher starts
with, concepts are in the form of specific variables, measures are systemically
created before data collection and are standardized, data is numerical, theory
is largely casual and is deductive, Procedures are standard and is replicable,
analysis proceeds by using statistics, and tables or charts and discussing how
what they show related to the hypothesis.
As quantitative
research methods use ‘The Scientific Method’ the methodologies are to keep the
method as plausible as possible. These five methodologies are objective
measurement, generalizability, reliability, and validity. Objective measurement
requires a solid way to determine the value of a variable. Generalisability is
the ability for the results to be applied to the entire population, which had
been researched. As a population tends to be a significant number of people an
experiment tends to look at a sample that should represent the entire
population. Reliability is the ability to produce consistent measurements over
time. To check reliability is to see if
results give similar values if the same participant does it numerous amounts of
times. Inter-rater is when a number of testers who rate the same person on the
same criteria and give similar ratings to the participant. Validity is whether
or not the experiment measures the variable of interest. Internal validity is
whether or not the experiment procedures was conducted correctly, and external
validity is whether or not the experimental situation resembles a real
situation or the ‘real-world’. Standardisation is having each participant
experience the same experience to ensure there is no bias or interference from
the researcher.
Researchers
of both qualitative and quantitative methods must be respectful for the basic
rights of humans and animals when conducting research. As all proposals are
reviewed by special committees researchers must be aware of the ethical issues
that come into play when conducting and experimental research project. This
includes having an understanding of informed consent and being aware that
participants need to understand any potential risks and benefits of the study
and consent to participate as well as provide a signed statement. Any risks to
the participant must be minimised and deception to the participant strongly
considered. Although some studies may require the participant to be deceived as
to not bias the results there are strict guidelines, which have been made by
the Australian Psychological Society (2007) Code of Ethics. At the end of the
study all participants are required to be debriefed and informed of any
deception, which has occurred. It is also in the Code of Ethics that all
participants must not be coeheresed in any way and must be a voluntary
participant (Flick, 2009).
Reference List
Coffey, A., Atkinson, P.
(1996). Making sense of qualitative data:
complementary research strategies. Thousand Oaks,
Sage Publications
Flick, U, (2009). An Introduction to Qualitative Research. Thousand oaks, Sage publications Ltd
Willig, C, (2001). Introducing
qualitative research in psychology: adventures in theory and method : ISBN 0 335 20535 6
Wolf, M. F., Meta-analysis: Quantitative methods for research synthesis. Sage
Publications
Data analysis is can be basically defined as the procedure of examining data, processing it, modifying and revising the information with only one purpose in mind to make the entire procedure of making a decision worthwhile with the help of pertaining data and coming to a solid conclusion. quantitative descriptive analysis
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