research methods. casual research vs. empirical research casual research is what we do everyday as...
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RESEARCH METHODS
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Casual research vs. empirical research
Casual research is what we do everyday as we observe our surroundings and draw
conclusions about what we see
Empirical Research: Structured Generalizability (representative sample).
Systematic, controlled observation. Theoretical basis for method of study
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What Is The Scientific Method?
The Scientific Method:
•A systematic series of steps that ensures
maximum objectivity and consistency in
researching a problem
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Defining the Problem:
– State as clearly as possible what you hope to investigate.
– Operational Definition: An explanation of an abstract concept that is specific enough to measure.
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Reviewing the Literature:
– Literature: • The relevant scholarly
studies and• information that pertains to
the subject• what you’re interested
researching. • begin to talk about theoretical
perspective
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Formulating the Hypothesis:
–Hypothesis: • A speculative statement about the
relationship between two or more variables.
–Variable:• A measurable trait or characteristic that
is subject to change under different conditions.
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Types of Variables:• Independent:
– The variable that is hypothesized to cause or influence another.
• Dependent:– The variable whose action depends on
the influence of the independent variable.
Formulating the Hypothesis:
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Formulating the Hypothesis:
Correlations:
• Exist when a change in one variable coincides with a change in another.
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Correlations:Independent variable
xBan of assault rifles
Degree of integration into society
Parents’ church attendance
Time spent preparing for quiz
Parents’ income
Dependent variabley
Use of weapons in crime
Likelihood of suicide
Children’s church attendance
Performance on quiz
Likelihood of children’s enrolling in college
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CAUSATIONCorrelation =
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Does the difference make a difference?
• Hypothesis Testing– Is the specified relationship
statistically “significant”?• What is the likelihood of the relationship
occurring by chance?• Can we say with some certainty that the
relationship will reappear?
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Collecting and Analyzing Data:
Selecting the Sample• Representative Samples:
– A selection from a larger population that is statistically typical of that population.
•Random Samples:– When every member of an
entire population has the same chance of being selected.
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Collecting and Analyzing Data:
Ensuring Validity and Reliability:•Validity: The degree to which a measure truly reflects the phenomenon being studied.•Reliability:The extent to which a measure provides consistent results.
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Major Research Designs
Surveys:
•A study generally in the form of an interview or questionnaire.
•Provides sociologists with information about how people act or think.
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Research Methods, cont.
Survey Research: data collected through questionnaires or interviews; can measure things such as attitudes or values that can not be observed
Advantages:large population can be studiedrandom, representative sample means
results can be generalizedDisadvantages:can not provide in-depth information about
people’s behavior or experiences
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Research Methods, cont.
What do you think the chances are these days that a white person will not get a job or promotion while an equally or less qualified black person gets one instead? _____ Very likely_____ Somewhat likely_____ Somewhat unlikely_____ Very unlikely_____ Don't know
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Ethnographic Research:
•Interviews:High response rate.Can probe beyond
questionnaire.•Questionnaires:
Inexpensive.Good for large samples.
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Field Research:
Collecting information through direct
participation and/or observation of a group.Participant Observation:
• When the researcher “joins” a group for a period of time to get a sense of how it operates.
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Field Research:
Field Research (Participant and nonparticipant observation): researcher directly observes people in their natural settingsAdvantages:• provides detailed and descriptive understandings of people’s everyday lives• generally inexpensive to conductDisadvantages:• time consuming • difficult to replicate• difficult to generalize to other groups• particularly susceptible to ethical issues
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Experiments:
•The artificially created situation that allows the researcher to manipulate variables.
•Experiments involve two types of groups:
Experimental: Exposed to independent variable
Control Group: Not exposed to independent
variable.
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Experiments:
Experiment: the use of experimental and control groups, usually in a laboratory, to test the effect of one variable on another variable
Advantages:experimenter is able to control other variables so causal relationship can be studiedeasy to replicate
Disadvantages:not a natural environmentmany sociological concepts can not be measured in a lab
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Use of Existing Sources:
Secondary Analysis:• Research techniques making use of publicly accessible information and data.
Content Analysis:• The systematic coding and objective recording of data, guided by some rationale.
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Finally…
• Make Conclusions
• Report Findings
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American Sociological Association Code of Ethics on Sociological Research:• Researchers should always maintain
objectivity and integrity• Respects respondents right to
privacy• Protect respondents from personal
harm• Preserve confidentiality• Disclose all sources of funding• Do not abuse role as researcher