chp5-theoretical framework.ppt

1
The research process:
theoretical framework and
hypothesis development
CHAPTER 5

2
Chapter Objectives
 Identify and label variables associated with
any given situation.
 Establish the links among the variables and
evolve a theoretical framework.
 Develop a set of hypotheses to be tested and
state them in the null and the alternate.
 Apply what has been learned to a research
project.

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Steps 4 and 5
 Step 4: Theoretical Framework
 Step 5: Generation Hypothesis
(see the next Figure)

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The Steps for Research process

Theoretical Framework
 A theoretical framework represents your
beliefs on how certain phenomena (or
variables or concepts) are related to
each other (a model) and an
explanation on why you believe that
these variables are associated to each
other (a theory).
5

 Basic steps:
 Identify and label the variables
correctly
 State the relationships among the
variables: formulate hypotheses
 Explain how or why you expect these
relationships
6

Variables
 Any concept or construct that varies
or changes in value
 Main types of variables:
 Dependent variable
 Independent variable
 Moderating variable
 Mediating variable (or intervening)
7

(In)dependent Variables
 Dependent variable (DV)
 Is of primary interest to the researcher.
The goal of the research project is to
understand, predict or explain the
variability of this variable.
 Independent variable (IV)
 Influences the DV in either positive or
negative way. The variance in the DV is
accounted for by the IV.
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Examples
 List the variables, and label them as
dependent or independent,
explaining why they are so labeled.
Example 1
An applied researcher wants to
increase the performance of
organizational members in particular
bank.

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Answer to Example 1
 The dependent variable is
organizational performance because
it is the primary variable of interest to
the applied researcher, who wants to
increase the commitment of the
members in the bank.

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Example 2
 A marketing manager wonders why the
recent advertisement strategy does not work.
What would be the dependent variable here?
 Answer: The dependent variable is
advertisement strategy because the
marketing manager is interested in knowing
why the recent strategy does not work.

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Example 3
 Research studies indicate that
successful new product development
has an influence on the stock market
price of the company. That is, the more
successful the new product turns out to
be, the higher will be the stock market
price of the firm.

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Answer to the Example 3
 Independent Variable is the success of
the new product.
 Dependent Variable is the stock market
price.

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Example 4
 Cross-cultural research indicates that
managerial values govern the power
distance between superiors and
subordinates.
Dependent V. : the power distance.
Independent V. : Managerial values.

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Example 5
 A manager believes that good supervision
and training would increase the production
level of the workers.
 Answer
Dependent V.: Production ( Main variable
of interest)
Independent V.: Supervision and
Training ( Help to explain the variance in
production)

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Example 6
 A consultant is of the opinion that much
benefit would accrue by buying and selling at
the appropriate times in a financial
environment where the stocks are volatile.
 Answer
Dependent V.: Gains (variable of primary
interest).
Independent V.: Buying at right time and
Selling at right time (Explain the variance
in gains or benefit).

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Example 7
 It has been found that there is a
relationship between the availability of
Reference Manuals that
manufacturing employees have access
to, and the product rejects. That is,
when workers follow the procedures
laid down in the manual, they are able
to manufacture products that are
flawless.

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Answer to Example 7
 Dependent Variable: number of Rejects.
 Independent Variable: Availability of
Reference Manuals.

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Figure 3a
FIGURE 5.3A
Copyright © 2003 John Wiley & Sons, Inc. Sekaran/RESEARCH 4E

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Example 7 (Cont.)
 Although this relationship is true in
general for all workers, but it is not
true for workers who are not using the
manual every time they need it.
 Thus, the interest and inclination of
the workers is a Moderating
Variable.
( See Figure 3B)

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Figure 3B
FIGURE 5.3b

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Moderators
 Moderating variable
Moderator is qualitative
(e.g., gender, race,
class) or quantitative
(e.g., level of reward)
variable that affects the
direction and/or
strength of relation
between independent
and dependent
variable.
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The Moderating Variable
 Is one that has a strong contingent
effect on the independent variable-
dependent variable relationship.
 The presence of the moderating
variable modifies the original
relationship between the independent
and dependent variables.

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Example 8
 A prevalent theory is that the diversity of
the workforce (according to different ethnic
origins, races, and nationalities) contributes
more to organizational effectiveness
because each group brings it own special
expertise and skills to the workplace. This
synergy can be exploited, however, only if
managers know how to harness the special
talents of the diverse work group; otherwise,
they will remain untapped.
(See Figure 4)

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Figure 4
FIGURE 5.4

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Distinction Between
Variables
 Situation 1:
A research study indicates that the
better the quality of the training
programs in an organization and the
greater the growth needs of the
employees ( where the need to develop
and grow on the job is strong), the
greater is their willingness to learn
new ways of doing things.

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 The dependent variable: the employees
willingness to learn.
 The independent variables: the training
programs and growth need strength.
( See Figure 5A)

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Figure 5A
FIGURE 5.5a

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 Situation 2
Another research study indicates that the
willingness of the employees to learn new
ways of doing things is not influenced by the
quality of the training programs offered by
the organizations to all people without any
distinction. Only those with high growth
needs seem to have the yearning to learn to
do new things through specialized training.

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 The dependent variable in this case is the
employees willingness to learn.
 The independent variable is the quality of the
training program.
 The moderating variable is the growth need
strength( only those with high growth needs
show a greater willingness and adaptability to
learn to do new things when the quality of
the training programs is improved.
(See Figure 5B)

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Figure 5B
FIGURE 5.5b

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The Intervening Variable
 Is one that surfaces between the time
the independent variables start
operating to influence the dependent
variable and the time their impact is
felt on it.

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Example 9
 In Example 8 where:
 A prevalent theory is that the diversity of the
workforce (according to different ethnic
origins, races, and nationalities) contributes
more to organizational effectiveness because
each group brings it own special expertise
and skills to the workplace. This synergy can
be exploited, however, only if managers know
how to harness the special talents of the
diverse work group; otherwise, they will
remain untapped.

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Example 9 Cont.
 The dependent variable: the
organizational effectiveness.
 The independent variable: the
workforce diversity.
 The intervening variable that surfaces
as a function of the diversity in the
workforce is creative synergy.

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The Intervening Variable
 This creative synergy results from the
"diverse" workforce interacting and bringing
together their expertise in problem solving.
 Note that creative synergy, the
intervening variable, surfaces at time
t2, as a function of workforce diversity, which
was in place at time t1, to bring about
organizational effectiveness in time t3. The
dynamics of these relationships are illustrated
in Figures 6 and 7.

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Figure 6
FIGURE 5.6

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Figure 7
FIGURE 5.7

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 Having examined the different kinds of
variables that could operate in a
situation and how the relationships
among these can be established, it is
now possible to see how we can
develop the conceptual model or the
theoretical framework for our research.

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 The theoretical framework is the
foundation on which the entire research
project is based.
 It is a logically developed, described,
and elaborated network of associations
among the variables deemed relevant
to the problem situation.

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The components of the
theoretical framework
1. The variables considered relevant to
the study should be clearly defined.
2. A conceptual model that describes
the relationships between the variables
in the model should be given.
3. A clear explanation of why we
expect these relationships to exist.

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The Relationship Between the Literature
Survey and the Theoretical Framework
 The literature survey provides a solid
foundation for developing the
theoretical framework.
 The literature survey identifies the
variables that might be important, as
determined by previous research
findings.

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The Relationship Between the Literature
Survey and the Theoretical Framework
 The theoretical framework elaborates the
relationships among the variables, explains
the theory underlying these relations, and
describes the nature and direction of the
relationships.
 The theoretical framework provides the
logical base for developing testable
hypotheses.

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Example 10 Delta Airlines
 According to the reports, Delta Airlines
faced charges of air-safety violations
when there were several near collisions
in midair, and one accident that
resulted in 137 deaths in 1987.
 Four important factors that seem to
have influenced these are:

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Example 10 Delta Airlines
1. Poor communication among the cockpit
crew members.
2. Poor coordination between ground staff and
cockpit crew.
3. Minimal training given to the cockpit crew.
4. Management philosophy that encouraged a
decentralized structure.
Did these factors indeed contribute to the
safety violations?

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Theoretical Framework for Example
10
 The dependent variable is safety violation,
which is the variable of primary interest.
 The variance in the safety violation is
attempted to be explained by the four
independent variables of (1) communication
among crew members, (2) communication
between ground control and the cockpit crew,
(3) training received by the cockpit crew, and
(4) decentralization.

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Theoretical Framework for
Example 10
 The less the communication among
the crew members themselves, the
greater is the probability of air-
safety violations since very little
information is shared among them.

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Example 10
 When ground crew fail to give the right
information at the right time, misfortunes are
bound to occur with aborted flights and
collisions.
 Coordination between ground and cockpit
crew is at the very heart of air safety. Thus,
the less the coordination between ground
control and cockpit crew, the greater the
possibility of air-safety violations taking place.

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Example 10
 Both of the above factors are exacerbated by the
management philosophy of Delta Airlines, which
emphasizes decentralization.
 Centralized coordination and control assume great
importance when increased flights overall in midair,
and with all airlines operating many more flights.
 Thus, the greater the degree of decentralization, the
greater is the scope for lower levels of
communication both among in-flight staff and
between ground staff and cockpit crew, and the
greater the scope for air-safety violations.

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Example 10
 When cockpit crew members are not
adequately trained, they may not have the
requisite knowledge of safety standards or
may suffer from an inability to handle
emergency situations and avoid collisions.
 Thus, poor training also adds to the
probability of increased safety violations.
These relationships are diagrammed in
Figure 8.

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Figure 8
FIGURE 5.8

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Interjecting an Intervening
variable to the model
 We may say that lack of adequate training
makes the pilots nervous and diffident, and
this in turn explains why they are not able to
confidently handle situations in midair when
many aircraft share the skies.
 Nervousness and diffidence are a function
of lack of training, and help to explain why
inadequate training would result in air-safety
hazard.
This scenario can be depicted as in Figure 9

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Figure 9
FIGURE 5.9

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Poor Training as a Moderating
Variable
 We may change the model by using (poor)
training as a moderating variable.
 We are theorizing that poor communication,
poor coordination, and decentralization are
likely to result in air-safety violations only in
such cases where the pilot in charge has had
inadequate training.
See Figure 10

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Figure 10
FIGURE 5.10

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Example 10
 These examples illustrate that the
same variable could be independent,
intervening, or moderation, depending
on how we conceptualize our
theoretical model.

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Example 11
 Define the problem and develop the
theoretical framework for the
following situation.
The probability of cancer victims
successfully recovering under treatment
was studied by a medical researcher in
a hospital. She found three variables to
be important for recovery:

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Exercise
1. Early and correct diagnosis by the
doctor.
2. The nurse’s careful follow-up of the
doctor’s instructions.
3. Peace and quit in the vicinity.

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Exercise (Cont.)
 In a quiet atmosphere, the patient
rested well and recovered sooner.
Patients who were admitted in
advanced stages of cancer did not
respond to treatment even though
the doctor’s diagnosis was performed
immediately on arrival, the nurses did
their best, and there was plenty of
peace and quit in the area.

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Exercise (Cont.)
 Thus, stage of cancer is a moderating
variable.
 Also, we could use the patient rest as
an intervening variable as shown in
Figure 11.

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Solution to the Exercise
SOLUTION TO EXERCISE 5.11

Hypothesis
 A proposition that is empirically testable. It is
an empirical statement concerned with the
relationship among variables.
 Good hypothesis:
 Must be adequate for its purpose
 Must be testable
 Must be better than its rivals
 Can be:
 Directional
 Non-directional
63

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Hypotheses Development
 Definition of Hypotheses: Is a logical
relationship between two or more
variables expressed in the form of a
testable statement.

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Statement of Hypotheses:
Formats
 If-Them Statements
Can be used to test whether there are
differences between two groups. It takes two
forms:
 (1) Employees who are more healthy will
take sick leave less frequently.
 (2) If employees are more healthy, them
they will take sick leave less frequently.

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Directional and Nondirectional
Hypotheses
 Directional hypotheses: the direction of
the relationship between the variables
(positive/negative) is indicated.

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Example 12
 The greater the stress experienced in
the job, the lower the job satisfaction of
employees.
Or
 Women are more motivated than men
are.

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Nondirectional hypotheses
 Nondirectional hypotheses: there are no
indication of the direction of the
relationships between variables.

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Example 13
 There is a relationship between age and
Job satisfaction.
Or
 There is a differences between the work
ethic values of American and Arabian
employees.

70
Null and Alternate Hypotheses
 The null hypotheses is a proposition that
states a definitive, exact relationship between
two variables.
 It states that the population correlation
between two variables is equal to zero (or
some definite number).
 In general, the null statement is expressed
as no (significant) difference between two
groups.

71
The Alternate Hypotheses
 The alternate hypotheses is the
opposite of the null hypotheses, is a
statement expressing a relationship
between two variables or indicating
differences between groups.

72
Examples for the Directional
Relationships
 The null hypotheses: In past example were we
state that: Women are more motivated than
men are. Then,
 H0: µM = µw
Or
 H0: µM - µw = 0
Where H0 represents the null hypotheses,
µM is the mean motivational level of the men,
µw is the mean motivational level of women.

73
 The alternate hypotheses for the
above example:
HA : µM < µw
 Which is the same as
HA : µM > µw
Where HA represents the alternate
hypotheses.

74
Examples for the nondirectional
relationship
 There is a difference between the work ethic
of American and Arabian employees.
 The null hypotheses would be:
Ho: µAM = µAR
Or
Ho: µAM - µAR = 0
Where µAM is the mean work ethic value of
Americans and µAR is the mean work ethic
value of Arabs.

75
relationship
above example would statistically be set
as:
HA: µAM ≠ µAR
where HA represents the alternate
hypotheses.

76
relationship
 For the example: The greater the stress experienced
in the job, the lower the job satisfaction of
employees.
 The null hypotheses would be:
Ho: There is no relationship between stress
experienced on the job and the job satisfaction of
employees.
This would be statistically expressed by:
Ho: P = 0
where P represents the correlation between
stress and job satisfaction, which in this case is equal
to 0 ( no correlation).

77
relationship
above null, can be stated as:
HA: P<0 (the correlation is negative)

78
relationship
 For the example: There is a relationship between age
and job satisfaction.
 For this nondirectional statement, the null
hypotheses would be statistically expressed as:
H0: p=0
 The alternate hypotheses would be expressed
as:
H0: P ≠ 0

Exercise
79
Give the hypotheses for the following framework:
Service quality
Customer
switching
Switching cost
.

Exercise
80
Give the hypotheses for the following framework:
Customer
satisfaction
Service quality
Customer
switching

81
 After formulating the null and alternate
hypotheses, the appropriate
statistical tests (t tests, F tests) can
be applied, which would indicate
whether or not support has been found
for these hypotheses.

82
Example 14
 A production manager is concerned about
the low output levels of his employees.
The articles that he read of job performance
mentioned four variables as important to
job performance: skill required for the job,
rewards, motivation, and satisfaction. In
several articles it was also indicated that only
if the rewards were (attractive) did
motivation, satisfaction, and job performance
increase, not otherwise.

83
Example 14 (cont.)
 Given the above situation, do the
following:
1. Define the problem.
2. Evolve a theoretical framework.
3. Develop at least six hypotheses.

84
Example 14 (cont.)
 Problem Statement
How can the job performance (output)
of the employees be increased through
enriched jobs and rewards?

85
Schematic Diagram for the
SOLUTION TO EXERCISE 5.13

86
Hypotheses for Example 14
 HA1: If the job is enriched and utilizes all
the skills possessed by the employee,
then employee satisfaction will be high.
 HA2: If the job is enriched and utilizes all
the skills possessed by the employee,
then employee motivation will be high.
 HA3: There will be a positive correlation
between satisfaction and motivation.

87
Hypotheses for Example 14
 HA4: Greater rewards will influence motivation
and satisfaction only for those employees
who find the rewards attractive, not for the
others.
 HA5: Satisfaction and motivation will positively
influence performance.
 HA6: The more enriched the job and the
greater the skills utilized by the job, the
higher the level of employee performance.

88
Example of Literature Review,
Theoretical Framework, and
Hypotheses Development
 Introduction
Despite the dramatic increase in the number
of managerial women during the current
decade, the number of women in top
management positions continues to be very
small, suggesting a glass ceiling effect that
women currently face (Morrison, W. & Vura,
1999; Van Velsor,2000).

89
Introduction (Cont.)
Given the projected demographics of
the workplace, which forecasts that for
every six or seven women entering the
workforce in the future, there will be
about only three males joining the labor
market, it becomes important to
examine the organizational factors that
would facilitate the early advancement
of women to top executive positions.

90
Introduction (Cont.)
This study is an effort to identify the
factors that currently impede women’s
advancement to the top in
organizations.

91
A Brief Literature Survey &
 Read the paragraphs about the
literature survey and theoretical
framework for the above example on
page 93 from the textbook.

92
The Hypotheses
1. The greater the extent of gender
stereotyping in organizations, the fewer will
be the number of women at the top.
2. Male managers have more access to critical
information than women managers in the
same rank.
3. There will be a significant positive correlation
between access to information and chances
for promotion to top-level positions.

93
The Hypotheses
4. The more the sex-role stereotype, the less
the access to critical information for women.
5. Sex-role stereotyping and access to critical
information will both significantly explain the
variance in promotional opportunities for
women to top-level positions.
(See next Figure)

94
Figure: schematic diagram of the
example
FIGURE 5.11

95
Exercises on Theoretical
Framework
 Develop a theoretical framework for the
following situation and state one testable
hypothesis in the null and the alternate.
 A school administrator is interested in
finding how the threatened teachers’ strike
can be averted. He knows that pay demands
and the classroom’s physical environment are
the two main issues in the situation. He,
however, feels that these two are not major
concerns for the teachers who are extremely
dedicated to teaching.

96
Framework (Cont.)
 Since the administrator’s main concern
is about the strike, teachers’ strike is
the dependent variable. Pay and the
physical environment of the classroom
are the two independent variables,
which influence the strike situation.

97
Framework (Cont.)
The grater the pay demands made by the
teachers, the greater the possibility of a
strike, since the school administration refuse
the idea of higher wages. The more
uncomfortable the classroom physical
environment, the more difficult it will be for
teachers to do an effective job in the
classroom, and hence the greater the
possibility of teachers going on strike.

98
Framework (Cont.)
However, this relationship between the
independent variables and the dependent
variable will be true only for those teachers
who are not dedicated to teaching. The truly
dedicated teachers would be more concerned
about doing a good job despite the hardships
faced by them, and hence the pay demands
and the classroom environment will not be
factors influencing their decision to join the
strike.
(See Schematic Diagram).

99
Schematic Diagram
THEORETICAL FRAMEWORK ANSWERS TO EXERCISES (PAGES 113-120 OF MANUAL) 5A

100
Hypothesis:
 H01: Dedication to teaching will not alter
the relationship between the
independent variables of pay and
classroom environment and the
dependent variable of teachers’ decision
to go on strike.

101
Hypothesis:
 HA1: only for those teachers who are not
truly dedicated to teaching, will pay
considerations and classroom
environment be factors that would
influence their decision to go on strike.

102
Exercise
 Here are eight variables:
1) Understanding student needs (by teacher);
2) Developing appropriate teaching strategies (by
teacher);
3) In-class examples and exercises;
4) Student entry level skills;
5) Student understanding;
6) Student exam performance;
7) Difficulty of exam;
8) Stress.

103
Exercise
a. With these eight variables, develop a
theoretical framework, treating #4
(Student entry level skills) as a
moderator, and variable #5 (Student
understanding) as an intervening
variable.
b. Develop four hypotheses.

104
ANSWERS
a. The variance in the performance of
students in the exam can be accounted for by
the four independent variables – teacher’s
understanding of the needs of the students,
the different teaching strategies developed by
the teacher, the number of in-class examples
and exercises that the teacher gives, and how
difficult the exam itself happens to be.

105
ANSWERS (Cont.)
When the teacher understands students’
difficulties and needs, he tries to
develop appropriate teaching strategies
in order to meet the needs of the
students to understand what is being
taught, students understanding will
increase.

106
ANSWERS (Cont.)
In addition, if the teacher uses several examples to
put across the points and gives exercises in class to
test the extent to which students have understood ,
then, the students’ level of understanding of what is
being taught will increase. However, the entry- level
skills of the students should be sufficiently adequate
to enable them to understand what is being taught.
If the student entry level skills and comprehension
are very low, then the teachers’ efforts will not work.

107
ANSWERS (Cont.)
 The level of difficulty of the exam is also
another factor that would account for the
variance in student performance. The more
difficult the exam, the more stressed the
students will feel while answering the exam,
and the lower will be their performance level
in the exam. Thus, stress is the intervening
variable here.
( see next Figure).

108
Figure: Schematic Diagram on
student performance
THEORETICAL FRAMEWORK ANSWERS TO EXERCISES (PAGES 113-120 OF MANUAL) 5E

109
Hypotheses
 HA1: Only for those who have the requisite
entry level skills, will more in-class exercises
and examples help increase the students’
level of understanding of the subject taught.
 HA2: The more difficult the exams, the greater
the stress experienced by the students.

110
Hypotheses
 HA3: The higher the level of stress
experienced by the students, the lower
their level of performance in the exam.
 HA4: When students understand the
subject better, they will perform better
in the exam.

chp5-theoretical framework.ppt

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