MR Test 2 Flashcards
What are the 11 steps for Determining the Research Design?
1) Establish the need for MR
2) Define the problem
3) Establish research objectives
4) Determine research design
5) Identify Information
6) Determine methods of accessing data
7) Design data collection forms
8) Determine sample plan and sizes
9) Collect data
10) Analyze data
11) Prepare and present the final research
Why do you have to determine research design?
Because every research problem is unique. Therefore, no one research will satisfy all types of research objectives
3 types of research designs
Exploratory
Descriptive
Causal
research has 3 objectives
To develop hypotheses
To measure a variable of interest
To test hypotheses that specify relationships between variables
Exploratory Research
Unstructured, informal research undertaken to gain background information
“Unstructured” – no formalized set of objectives, sample plan, or questionnaire
“Informal” – aimed at gaining additional information about a topic and generating possible hypotheses
Often conducted at the outset of research projects
Systematic, but very flexible
Fast (especially online research)
Relatively inexpensive
Some exploratory research is needed in any research project
Uses of Exploratory Research
To gain background information
To help define terms and concepts (e.g., what is “bank image?”)
To clarify (help define) problems, and hypotheses
“Hypotheses” – statements describing the speculated relationships among variables
To prioritize research projects
Types of Exploratory Research: Secondary data analysis
Using existing information relevant to the research objectives (“secondary” = data that have been collected for some other purpose)
Library, Internet – books, journals, reports, magazines, bulletins, news letters, etc.,
Often the “core” of exploratory research
Benefits, minimal costs
Types of Exploratory Research: Experience Surveys
Gathering information from knowledgeable people (experts) on the issues relevant to the research problem
Note that there is no formal attempt to ensure that results are representative of any defined group of subjects, unlike with surveys conducted as part of descriptive research
Types of Exploratory Research: Case Analysis
A review of available information about a former situation that has some similarities to the present research problem
Some caveats; determine relevance of case:
How similar are the phenomena?
What situational factors have changed?
Types of Exploratory Research: Focus Groups
Small groups of people brought together and guided by a moderator through an unstructured, spontaneous (but focused) discussion
Useful technique for gathering information from a limited sample of respondents
Can be used to generate ideas, to gain insights into basic needs and attitudes, and to learn consumers’ “vocabulary” when they relate to a product
Types of Exploratory Research: Projective Techniques
Seek to explore hidden consumer motives for buying goods and services by asking participants to project themselves into a situation and then to respond to specific questions regarding the situation
Example: “Andrea Livingston never buys frozen dinners for her family because…”
Descriptive Research
Undertaken to answer who, what, where, when, and how questions. Examples:
Who are our customers?
What brands do they buy?
Where do they buy these brands?
When do they shop?
How did they find out about our products?
Answers to these are typically found in secondary data or by conducting surveys
Marketing managers need answers to these questions before they can formulate effective marketing strategies
Important: Note that we cannot answer “WHY?” questions with descriptive research
Types of Descriptive Research: Cross-sectional Studies
Measure units from a sample of the population at only one point in time “snapshots”
Very common in MR
Example: Questions asked: age, occupation, income, educational level, etc.,
Employ fairly large sample sizes, therefore referred to as “sample surveys.”
Types of Descriptive Research: Sample Surveys
Cross-sectional studies whose samples are representative of a specific population
Require that their samples be drawn according to a prescribed plan and to a predetermined number
Online survey research becoming increasingly common
Types of Descriptive Research: Longitudinal Studies
Repeatedly measure the same sample units of a population over a period of time
“Movies” of the population
“Panel” – Sample units who have agreed to answer questions at periodic intervals.
Often, the demographics of the panel are proportionate to the demographics in the total population (Census Bureau statistics)
ACNielsen, NFO Worldwide
Not limited to consumers; can have panels of building contractors, supermarkets, physicians, lawyers, etc.
Longitudinal Studies: Continuous Panels
Same questions are asked on each measurement
Example: firms wishing to track changes in consumers’ purchases, attitudes, etc., Brand-switching studies
Longitudinal Studies: Discontinuous Panels
Questions vary from measurement to measurement
Example: a marketer wanting to know how consumers feel about two different product concepts
Uses of Longitudinal Studies
Brand-switching studies
Studies examining how many consumers switched brands from one time period to the next
Market tracking studies
Measure some variable of interest over time (e.g., market share, unit sales)
Causal Research
“Causality” – Change in x brings about change in y
If x, then y
“What will happen if….?” “What makes consumers behave the way they do?”
In marketing, what will cause a change in consumer satisfaction, gain in market share, increase in sales?
Establishing causality is very difficult
Causal relationships can ONLY be determined by the use of experiments
Experiments
“Experiment” – manipulating an independent variable (IV) to see how it affects a dependent variable (DV), while also controlling the effects of additional extraneous variables (EV).
“Independent variable” – a variable over which the researcher has control and wishes to manipulate
“Dependent variable” – a variable that we have little or no direct control over, yet we have a strong interest in
“Extraneous variable” – one that may have some effect on a DV but yet is not an IV.
Experimental Design
A procedure for devising an experimental setting such that a change in a DV may be attributed solely to the change in an IV.
Symbols:
O = the measurement of a DV
X = the manipulation, or change, of an IV
R = random assignment of subjects to experimental and control groups
E = experimental effect; change in the DV due to the IV
O1 or O2 = measurement of DV at Time 1 and Time 2
Pretest – Measurement of the DV taken before changing the IV.
Posttest – Measurement of the DV taken after changing the IV.
“True” experimental design – one that truly isolates the effects of the IV on the DV while controlling for the effects of any extraneous variables.
Three designs:
After-only
One-group, before-after
Before-after with control group
After-Only Design
Achieved by changing the IV and, after some time, measuring the DV:
X O1
Note that this design does not measure up to requirement for a “true” experimental design: “Quasi-experimental” design
No measure of E, the experimental effect
One-Group, Before-After Design
First measure the DV, then change IV, and finally, take a second measure of the DV:
O1 X O2
Change in DV from Time 1 to Time 2
But, we cannot attribute the change in DV solely to the change in the IV.
No measurement of E (no control for the effect of extraneous variables).
Quasi-experimental design
Before-After with Control Group Design
“Control group” = a group whose subjects have not been exposed to the change in the IV
“Experimental group” = a group whose subjects have been exposed to the change in the IV
This design achieved by randomly dividing the subjects into two groups, the Control and the Experimental group. Pretest measurement of the DV is taken on both groups. IV is changed only in the Experimental group. Posttest measurements taken after some time of the DV in both groups:
Experimental group (R) O1 X O2
Control group (R) O3 O4
where E = (O2 – O1) – (O4 – O3)
True experimental design - can make conclusions about causality
Design assumes that the two groups are equivalent in all aspects
An experiment is “valid” if
The observed change in the DV is, in fact, due to the IV, and
If the results of the experiment apply to the “real world”
Two forms of validity:
Internal validity = the extent to which the change in the DV was solely due to the IV
External validity = the extent to which the relationship observed between the IV and the DV during the experiment is generalizable to the “real world.”