salkind ppt ch01 - troy universityspectrum.troy.edu/drsmall/class stuff/cp6691/salkind/mid-term...
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Chapter 1
The Role and
Importance of
Research
© 2009 Pearson Prentice Hall, Salkind.
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CHAPTER OVERVIEW
� What Research Is and Isn’t
� A Model of Scientific Inquiry
� Different Types of Research
� Experimental Research
� What Method to Use When
� Applied and Basic Research
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WHAT IS RESEARCH
ALL ABOUT, ANYWAY?
Increasing our understanding of how and why we behave the way we do!!
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A THEORY
� Organizes information
� Helps explain past events
� Predicts new events
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RESEARCH IS BASED ON
THE WORK OF OTHERS
� Past research guides new research
� Research is NOT copying the work of others
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RESEARCH CAN BE
REPLICATED
� Repeatability is a sign of credible science
� Replication guides future research
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RESEARCH IS
GENERALIZABLE
� Research should apply to situations
outside of the study setting
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RESEARCH IS NOT DONE IN
INTELLECTUAL ISOLATION
� It is based on some logical rationale
� It is tied to theory
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RESEARCH IS “DOABLE”
� Good research questions can be
translated into projects that can be done!
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RESEARCH IS ONGOING
� Research generates new questions
� Research is incremental
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RESEARCH IS APOLITICAL
� Research should have the betterment of
society as its ultimate goal
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SCIENTIFIC METHOD
� A shared philosophical approach to
understanding the world
� A standard sequence of steps in
formulating and answering questions
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The steps in the research process
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QUESTIONS
� Asking a question
� Identifying a need
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IDENTIFYING IMPORTANT
FACTORS
� Not fully investigated
� Advance understanding
� Can be investigated
� Are interesting
� Lead to more questions
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FORMULATING A
HYPOTHESIS
� “If…then” statements
� Objective extension of the original question
� In a testable form
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COLLECTING RELEVANT
INFORMATION
� Hypotheses posit a relationship between different factors
� Data are collected that will confirm or refute the hypothesis
� Hypotheses are testable (not provable)
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TESTING THE HYPOTHESIS
� Inferential statistics
� Separate effects of factors from effects of chance
� Assign a probability level to obtained data
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WORKING WITH THE
HYPOTHESIS
� If the hypothesis is confirmed� Plan new research
� If the hypothesis is refuted� Try to understand what other factors might be
important
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RECONSIDERING THE
THEORY
� Theories can be modified
� Leading to new questions
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DIFFERENT TYPES OF
RESEARCH
� Nature of question asked
� Method used to answer question
� Degree of precision of method
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NONEXPERIMENTAL
RESEARCH
� Describe relationships between variables
� Cannot test cause-and-effect relationships
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NONEXPERIMENTAL
METHODS
� Descriptive
� Historical
� Correlational
� Qualitative
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DESCRIPTIVE RESEARCH
� Describes characteristics of existing phenomena
� Provides a broad picture
� Serves as a basis for other types of research
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HISTORICAL RESEARCH
� Describes past events in the context of other
past or current events
� Primary and secondary sources of data
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CORRELATIONAL RESEARCH
� Asks what several events have in common
� Asks whether knowing one event can
allow prediction of another event
� Does not imply causation
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QUALITATIVE RESEARCH
� Examines behavior in natural social, cultural,
and political contexts
� Usually results in non-quantitative data
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EXPERIMENTAL RESEARCH
� Tries to discover causal relationships
� Two types:
� True experimental research
� Quasi-experimental research
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TRUE EXPERIMENTAL
RESEARCH
� Participants assigned to groups
� Treatment variable is controlled by
researcher
� Control of potential causes of behavior
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QUASI-EXPERIMENTAL
RESEARCH
� Participants are preassigned to groups
� Useful when researcher cannot manipulate variables
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SUMMARY OF RESEARCH METHODS
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WHAT METHOD TO
USE WHEN?
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BASIC VS. APPLIED RESEARCH
� Basic research has no immediate application
� Applied research has immediate applications
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SUMMARY - STUDENTS SHOULD BE
ABLE TO:
� Define basic terms related to research and the scientific method.
� List eight (8) characteristics of high-quality research.
� Summarize the eight (8) steps in the scientific method.
� Describe the difference between experimental and nonexperimental research.
� List the three (3) different types of nonexperimental research designs.
� List the two (2) types of experimental research designs.
� Distinguish between basic research and applied research.
� Explain why a strong scientific method of inquiry will lead to valuable information regardless of significant or nonsignificant findings.
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