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Quantitative Research Methods
Lecture 1
1.What is scientific research? What is quantitative research?
2.Why we need research?
3.Who is conducting the research?
4.What is the research process?
5.What is the language of research?
1.What is scientific research? What is
quantitative research?
• Methods of knowing:
▫ by tenacity (“something is true
because it has always been true”);
▫ by intuition (“something is true
because it’s self-evident and stands to
reason”);
▫ by authority (“something is true
because a trusted source says so”);
▫ by scientific research (“something is
true because research results tell so”).
1.What is scientific research? What is
quantitative research?
• Characteristics of Scientific Research (Wimmer
& Dominick, 1997, pp. 9-11):
▫ public (vs. private)
▫ objective (vs. subjective)
▫ empirical (vs. speculative)
▫ systematic and cumulative (vs. ad-hoc and
discontinued)
▫ predictive (vs. time/space-bound)
2.Why do we the scientific research?
• Purposes of Scientific Research: to
discover/generate general laws underlying a
social process (i.e., theory) that help to
▫ describe the current state or past trend of the
process
▫ explain the causes of the process
▫ predict the future trajectory of the process
▫ control (i.e., intervene) the direction, pace, and
outcome of the process
A research for this class…
• Pre-course survey
• Q: what decisions can I make from the this data?
3.Who is conducting the research?
• Decision makers in industry and academic
initiated the research
• In industry:
▫ Internally: a research expert within the
organization
▫ Externally: a research company
 Arab Media Outlook was conducted by Deloitte
 Nielson: market research company “what people
watch, what people buy”
• In academic: a professor
Arab Media Outlook, 2015-2018
4.What is the research process?
4.1 Pre-research
4.2 Research
4.3 Post-research
4.1. Pre-research Phase
• Identifying a need for research
• Research questions guide the research
• Research hypotheses
• Deciding on the appropriate Research Methods
Research Methods
• Quantitative or Qualitative?
▫ Survey
▫ Content analysis
▫ Experiment
▫ Interview
▫ Focus group
▫ Observation
▫ Case study
▫ ……
Basic Types of Qualitative Methods
Focus group Interview Observation
Basic Types of Quantitative Methods
Survey Experiment Content analysis
What is Survey?
• Survey is a research technique that uses a
standardized questionnaire to collect
information about attitudes, opinions,
behaviors, and background and lifestyle
characteristics from a sample of respondents.
What Is Experiment?
Experiment is a procedure in which subjects are
first randomly assigned to experimental and
control conditions, with those under
experimental condition(s) given exposure to
certain stimulus or treatment whereas those
under control condition given no exposure, in
order to assess the effects of the message.
Example
A research on public policy:
Framing, Psychological Distance, &
Audience Perception An experiment on
perception of the BRI by Chinese and UAE
students (Shujun Jiang et al, 2018)
2.9
4.12
4.15
3.79
3.22
3.24
4.36
4.29
3.95
3.33
3.85
2.48
3.3
3.34
3.19
3.01
3.31
4.09
3.94
3.71
3.58
3.91
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
I understand China's the Belt and Road Initiative
B1 The Belt and Road Initiative will benefit my country.
B2 The Belt and Road Initiative will benefit COUNTRIES along the route.
B3 The Belt and Road Initiative will benefit INDIVIDUALS in the countries along
route.
B4 The Belt and Road Initiative will benefit me.
B5 UAE plays an important strategic role in China’s the Belt and Road Initiative
A1 The Belt and Road Initiative will benefit my country.
A2 The Belt and Road Initiative will benefit COUTRIES along the route.
A3 The Belt and Road Initiative will benefit INDIVIDUALS in the countries along
route.
A4 The Belt and Road Initiative will benefit me.
A5 UAE plays an important strategic role in China’s the Belt and Road Initiative
Perception of BRI
China UAE
Hypothesis testing
Before
Chin
a
Individual
Frame
ANOVA
No
differenceSocietal Frame
Control
UAE Individual
Frame
ANOVA
No
differenceSocietal Frame
Control
After
China Individual
Frame
T-test Sig.
Individual >
Societal
A3
Societal Frame
UAE Individual
Frame
T-test
No difference
Societal Frame
After
Societal
Frame
China T-test
No differenceUAE
Individual
Frame
China T-test Sig.
China > UAE
A2
A3UAE
Hypothesis was partially supported
For individual new frames, socially proximal entity (China) > socially distant
entity (UAE)
What is Content Analysis?
• Content analysis is a research method for the
studying and analyzing communication content
in a systematic, objective, and quantitative
manner for the purpose of measuring variables.
• In content analysis, communication content is
examined independently of those who produced
it. Communication professionals are not queried
about their attituds, opinions, and motivations
in the production of the content.
Example
• A research on News Produsers:
• Factors Influencing User Engagement in
Instagram News Produsers’ Accounts: A Case
in the UAE (Mansour Alameri & Shujun Jiang,
2018)
ALETIHADAE ALKHALEEJ.AE ALBAYANNEWS
Top Three UAE Official Newspapers’ Instagram
Accounts
UAE_BARQ NET_AD 3MEED_NEWS
Top Three UAE Non-official News Produser’
Instagram Accounts
Post with soft news are more attracted to comments than posts with hard news.
4.2. Research Phase
• In industry:
▫ Research expert meets executives to learn
research question, research methods, relevant
population, timetable, budget
▫ Then, literature review—measurement—train data
collectors—collect data– data analysis—report
• In academic
▫ Professors do all the above and write a paper for
conference or academic journal publication
4.3. Post-research phase
• Executives evaluate the research results and
make decision
• Professors evaluate the results and limitations to
improve future studies.
5.What is the language of research?
• 5.1. Theory
▫ “Theory is a set of related propositions that presents a
systematic view of phenomena by specifying
relationships among concepts.” (Winner and
Dominick, 1997, p. 11)
▫ Theory aims to explain the causes and predict the
consequences of a process as general as possible (i.e.,
as time-less and space-less as possible).
5.2 What Is Concept?
• A concept is the smallest element in a theory, as
bricks in a building;
• A concept is the abstract representation of a
phenomenon under investigation;
• Some authors call a broad concept as “construct”
that entails a number of narrow concepts; however,
the difference between construct and concept is
always relative because a construct may be the
constituent concept of another construct whereas a
concept may contain other concepts.
5.3 What Is Relationship?
• A relationship is a specification of the structural
connection between or among concepts in a
theory;
• The specification of a relationship includes:
▫ the nature (correlational or causal) of the relationship;
▫ the form (linear or otherwise) of the relationship;
▫ the direction (positive or negative) of the relationship;
▫ the strength (strong or modest) of the relationship.
Examples of Relationship
• Need for the Internet: dissatisfaction with the
conventional media and expected satisfaction with the
Internet drives adoption and use of the Internet
5.4 What Is Proposition?
• A formal presentation of the nature, form,
direction, and strength of a relationship
between/among theoretical concepts, which
could and should be in all three formats:
▫ Verbal description
▫ Graphic illustration
▫ Mathematical specification
Example of a Proposition
• Knowledge gap increases over time as the
different segments of a society learn new
information at a differential rate.
High SES Group
Low SES Group
Time
Knowledge
(Kh-Kl)=a+bTime
5.5 Terms Related to Theory
Narrowly Used Broadly Used
Hypothesis
a tentative theory
without fully tested
a theory at a early
stage
Model
a mathematical
version of a theory
a formally stated
theory
Framework
an analytic plan
based on a theory
a theory used for
empirical analysis
An example of TPB model
5.6 Research Procedure
Conceptualization Fieldwork Analysis
Sampling ReportingOperationalization
5.7 What Is Conceptualization?
• A thought process to identify key concepts and
formulate their structural relationship, based on
existing theory and past research;
• Conceptualization is to translate concrete events
and/or phenomena to abstract symbols and
propositions, which will necessarily ignore rich
details of the reality.
Structural Relationship among
Theoretical Concepts
Outcome
(Dependent
Variable)
Cause (Independent
Variable)
Control/Confound
Variable
Mediator
(Intervening
Variable)
Direct Impact
Indirect Impact
Conditioner
(Moderator Variable)
5.8 What Is Operationalization?
• A process to translate the abstract concepts into
concrete variables that can be quantitatively
measured by a questionnaire (in survey), coding
sheet (in content analysis), physiological
instruments (in experiment), and other means of
data collection;
• The quality of operationalization is evaluated by
▫ validity
▫ reliability
▫ practicality
From Conceptualization to
Operationalization
Concept
Variable
Measure
Reality
Conceptualization
Operationalization
Validity
Reliability
Comparison among Concept,
Variable, and Measure
Concept Variable Measure
Consumption
Behavior
Having happy
meal
How many happy
meal did you eat last
month?
Shopping
Behavior
Online
Shopping
How often did you
shop online?
5.9 What is Measurement?
• Measurement: is a set of rules for assigning
numbers, which represent values of varying
degrees of precision, for reported or observed
behaviors, attitudes, opinions, and other
individual, group, organization, content, or issue
characteristics.
• Measurement should be
 Valid
 Reliable
5.9.1 What is Validity and Reliability?
• Validity addresses whether or not you have
asked the right question to get the answers that
represents the phenomenon you are
researching.
• Reliability addresses the issue of the consistency
of the question that measures the concept being
studied.
5.9.1 What Is Validity & Reliability?
• Validity: the extent to which the results of a
study (i.e., the concepts and/or their
relationship) represent what the study is
intended to find.
• Reliability: the extent to which the results of a
study can be replicated among the same
population at a different time or among different
population(s) at any time.
5.9.1 What is Validity & Reliability?
• Internal validity is concerned with whether the
measurement is an accurate representation of
the concept being studied.
 E.g. internet use vs internet access
• External validity refers to whether the results of
a research study are generalizable to the
population of interest.
 E.g. A study of college student vs population
5.9.1 Validity vs. Reliability
Invalid & Unreliable Reliable but Invalid Valid & Reliable
5.9.1 Evaluation of Validity and
Reliability
• Validity is a conceptual question that doesn’t
have any direct and conclusive way of testing.
• Reliability is an empirical question that can be
evaluated based on test-retest data.

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1 introduction

  • 1. Quantitative Research Methods Lecture 1 1.What is scientific research? What is quantitative research? 2.Why we need research? 3.Who is conducting the research? 4.What is the research process? 5.What is the language of research?
  • 2. 1.What is scientific research? What is quantitative research? • Methods of knowing: ▫ by tenacity (“something is true because it has always been true”); ▫ by intuition (“something is true because it’s self-evident and stands to reason”); ▫ by authority (“something is true because a trusted source says so”); ▫ by scientific research (“something is true because research results tell so”).
  • 3. 1.What is scientific research? What is quantitative research? • Characteristics of Scientific Research (Wimmer & Dominick, 1997, pp. 9-11): ▫ public (vs. private) ▫ objective (vs. subjective) ▫ empirical (vs. speculative) ▫ systematic and cumulative (vs. ad-hoc and discontinued) ▫ predictive (vs. time/space-bound)
  • 4. 2.Why do we the scientific research? • Purposes of Scientific Research: to discover/generate general laws underlying a social process (i.e., theory) that help to ▫ describe the current state or past trend of the process ▫ explain the causes of the process ▫ predict the future trajectory of the process ▫ control (i.e., intervene) the direction, pace, and outcome of the process
  • 5. A research for this class… • Pre-course survey • Q: what decisions can I make from the this data?
  • 6. 3.Who is conducting the research? • Decision makers in industry and academic initiated the research • In industry: ▫ Internally: a research expert within the organization ▫ Externally: a research company  Arab Media Outlook was conducted by Deloitte  Nielson: market research company “what people watch, what people buy” • In academic: a professor
  • 7.
  • 9. 4.What is the research process? 4.1 Pre-research 4.2 Research 4.3 Post-research
  • 10. 4.1. Pre-research Phase • Identifying a need for research • Research questions guide the research • Research hypotheses • Deciding on the appropriate Research Methods
  • 11. Research Methods • Quantitative or Qualitative? ▫ Survey ▫ Content analysis ▫ Experiment ▫ Interview ▫ Focus group ▫ Observation ▫ Case study ▫ ……
  • 12. Basic Types of Qualitative Methods Focus group Interview Observation
  • 13. Basic Types of Quantitative Methods Survey Experiment Content analysis
  • 14. What is Survey? • Survey is a research technique that uses a standardized questionnaire to collect information about attitudes, opinions, behaviors, and background and lifestyle characteristics from a sample of respondents.
  • 15. What Is Experiment? Experiment is a procedure in which subjects are first randomly assigned to experimental and control conditions, with those under experimental condition(s) given exposure to certain stimulus or treatment whereas those under control condition given no exposure, in order to assess the effects of the message.
  • 16. Example A research on public policy: Framing, Psychological Distance, & Audience Perception An experiment on perception of the BRI by Chinese and UAE students (Shujun Jiang et al, 2018)
  • 17. 2.9 4.12 4.15 3.79 3.22 3.24 4.36 4.29 3.95 3.33 3.85 2.48 3.3 3.34 3.19 3.01 3.31 4.09 3.94 3.71 3.58 3.91 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 I understand China's the Belt and Road Initiative B1 The Belt and Road Initiative will benefit my country. B2 The Belt and Road Initiative will benefit COUNTRIES along the route. B3 The Belt and Road Initiative will benefit INDIVIDUALS in the countries along route. B4 The Belt and Road Initiative will benefit me. B5 UAE plays an important strategic role in China’s the Belt and Road Initiative A1 The Belt and Road Initiative will benefit my country. A2 The Belt and Road Initiative will benefit COUTRIES along the route. A3 The Belt and Road Initiative will benefit INDIVIDUALS in the countries along route. A4 The Belt and Road Initiative will benefit me. A5 UAE plays an important strategic role in China’s the Belt and Road Initiative Perception of BRI China UAE
  • 18. Hypothesis testing Before Chin a Individual Frame ANOVA No differenceSocietal Frame Control UAE Individual Frame ANOVA No differenceSocietal Frame Control After China Individual Frame T-test Sig. Individual > Societal A3 Societal Frame UAE Individual Frame T-test No difference Societal Frame After Societal Frame China T-test No differenceUAE Individual Frame China T-test Sig. China > UAE A2 A3UAE Hypothesis was partially supported For individual new frames, socially proximal entity (China) > socially distant entity (UAE)
  • 19. What is Content Analysis? • Content analysis is a research method for the studying and analyzing communication content in a systematic, objective, and quantitative manner for the purpose of measuring variables. • In content analysis, communication content is examined independently of those who produced it. Communication professionals are not queried about their attituds, opinions, and motivations in the production of the content.
  • 20. Example • A research on News Produsers: • Factors Influencing User Engagement in Instagram News Produsers’ Accounts: A Case in the UAE (Mansour Alameri & Shujun Jiang, 2018)
  • 21. ALETIHADAE ALKHALEEJ.AE ALBAYANNEWS Top Three UAE Official Newspapers’ Instagram Accounts
  • 22. UAE_BARQ NET_AD 3MEED_NEWS Top Three UAE Non-official News Produser’ Instagram Accounts
  • 23. Post with soft news are more attracted to comments than posts with hard news.
  • 24. 4.2. Research Phase • In industry: ▫ Research expert meets executives to learn research question, research methods, relevant population, timetable, budget ▫ Then, literature review—measurement—train data collectors—collect data– data analysis—report • In academic ▫ Professors do all the above and write a paper for conference or academic journal publication
  • 25. 4.3. Post-research phase • Executives evaluate the research results and make decision • Professors evaluate the results and limitations to improve future studies.
  • 26. 5.What is the language of research? • 5.1. Theory ▫ “Theory is a set of related propositions that presents a systematic view of phenomena by specifying relationships among concepts.” (Winner and Dominick, 1997, p. 11) ▫ Theory aims to explain the causes and predict the consequences of a process as general as possible (i.e., as time-less and space-less as possible).
  • 27. 5.2 What Is Concept? • A concept is the smallest element in a theory, as bricks in a building; • A concept is the abstract representation of a phenomenon under investigation; • Some authors call a broad concept as “construct” that entails a number of narrow concepts; however, the difference between construct and concept is always relative because a construct may be the constituent concept of another construct whereas a concept may contain other concepts.
  • 28. 5.3 What Is Relationship? • A relationship is a specification of the structural connection between or among concepts in a theory; • The specification of a relationship includes: ▫ the nature (correlational or causal) of the relationship; ▫ the form (linear or otherwise) of the relationship; ▫ the direction (positive or negative) of the relationship; ▫ the strength (strong or modest) of the relationship.
  • 29. Examples of Relationship • Need for the Internet: dissatisfaction with the conventional media and expected satisfaction with the Internet drives adoption and use of the Internet
  • 30. 5.4 What Is Proposition? • A formal presentation of the nature, form, direction, and strength of a relationship between/among theoretical concepts, which could and should be in all three formats: ▫ Verbal description ▫ Graphic illustration ▫ Mathematical specification
  • 31. Example of a Proposition • Knowledge gap increases over time as the different segments of a society learn new information at a differential rate. High SES Group Low SES Group Time Knowledge (Kh-Kl)=a+bTime
  • 32. 5.5 Terms Related to Theory Narrowly Used Broadly Used Hypothesis a tentative theory without fully tested a theory at a early stage Model a mathematical version of a theory a formally stated theory Framework an analytic plan based on a theory a theory used for empirical analysis
  • 33. An example of TPB model
  • 34. 5.6 Research Procedure Conceptualization Fieldwork Analysis Sampling ReportingOperationalization
  • 35. 5.7 What Is Conceptualization? • A thought process to identify key concepts and formulate their structural relationship, based on existing theory and past research; • Conceptualization is to translate concrete events and/or phenomena to abstract symbols and propositions, which will necessarily ignore rich details of the reality.
  • 36. Structural Relationship among Theoretical Concepts Outcome (Dependent Variable) Cause (Independent Variable) Control/Confound Variable Mediator (Intervening Variable) Direct Impact Indirect Impact Conditioner (Moderator Variable)
  • 37. 5.8 What Is Operationalization? • A process to translate the abstract concepts into concrete variables that can be quantitatively measured by a questionnaire (in survey), coding sheet (in content analysis), physiological instruments (in experiment), and other means of data collection; • The quality of operationalization is evaluated by ▫ validity ▫ reliability ▫ practicality
  • 39. Comparison among Concept, Variable, and Measure Concept Variable Measure Consumption Behavior Having happy meal How many happy meal did you eat last month? Shopping Behavior Online Shopping How often did you shop online?
  • 40. 5.9 What is Measurement? • Measurement: is a set of rules for assigning numbers, which represent values of varying degrees of precision, for reported or observed behaviors, attitudes, opinions, and other individual, group, organization, content, or issue characteristics. • Measurement should be  Valid  Reliable
  • 41. 5.9.1 What is Validity and Reliability? • Validity addresses whether or not you have asked the right question to get the answers that represents the phenomenon you are researching. • Reliability addresses the issue of the consistency of the question that measures the concept being studied.
  • 42. 5.9.1 What Is Validity & Reliability? • Validity: the extent to which the results of a study (i.e., the concepts and/or their relationship) represent what the study is intended to find. • Reliability: the extent to which the results of a study can be replicated among the same population at a different time or among different population(s) at any time.
  • 43. 5.9.1 What is Validity & Reliability? • Internal validity is concerned with whether the measurement is an accurate representation of the concept being studied.  E.g. internet use vs internet access • External validity refers to whether the results of a research study are generalizable to the population of interest.  E.g. A study of college student vs population
  • 44. 5.9.1 Validity vs. Reliability Invalid & Unreliable Reliable but Invalid Valid & Reliable
  • 45. 5.9.1 Evaluation of Validity and Reliability • Validity is a conceptual question that doesn’t have any direct and conclusive way of testing. • Reliability is an empirical question that can be evaluated based on test-retest data.