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65 Cards in this Set

  • Front
  • Back
Non-probability
samples are NOT selected using random sampling, reliance on available subjects, purposive or judgmental sampling
Probability
is based on random sampling
Purposive or judgmental sampling
Based on - researcher’s knowledge of the population, Purpose of study
Snowball sampling
Starts small, gets bigger, Initial sample leads to additional observations, Appropriate for difficult populations, Start with a small and accessible target population
Quota sampling
Matrix of important characteristics of a population, Determine the proportion of the population in each cell
Disadvantages of non-probability sampling
Sampling bias, Conscious or non-conscious, Lack of representativeness, Average of the sample DOES NOT closely approximate average of the population
Theoretical Population
what you really want, what your ideal population would be. Ex. one student from each school in each country
Accessible Population
what you actually got your hands on. Ex. a few students from each region
Parameter
summary description of a given variable in the population Ex. mean income of all families of UGA undergrads
Stratified sampling

Organize the population into homogenous subsets in order to select appropriate number of elements from each subset

Multistage Cluster sampling

Large population makes an exhaustive list impossible or impractical. Ex. All church members in the US.

Sampling Frame
list of all the elements (unit analysis) used to select your sample. If you do not have a sampling frame, you cannot do probability sampling. Ex. Poll UGA student body concerning changes to North Campus tailgating policy.
Sampling error
degree of disconnect between the statistic and parameter
Sampling design
refers to the rules and procedures by which the populations are included in the sample
Random
Everyone has a equal chance of being selected
Components of Classic Experimental design
Independent and dependent variable, random assignment, pre and post testing, experimental and control groups.
Independent variable
predicts outcomes put forth in hypothesis (cause)
Dependent variable
consequent variable (effect)
Experimental group
receives the stimulus (IV)
Control group
do not receive the stimulus, point of comparison
Random assignment
Eliminates the threat of selection bias, because the researcher uses probability sampling to determine who is in the experimental group and who is in the control group (the participants themselves DO NOT self-select exposure to the independent variable)In order to isolate the effect of the independent variable, we must randomly assign participants into each group
Manipulation Check
in experimentation, the researcher should check to determine whether the intended independent variable was manipulated appropriately
Internal validity
conclusions drawn from the experimental results may not accurately reflect what has gone on in the experiment itself
External validity
generalizability of experimental findings to the real world
Quantitative data analysis
Techniques researchers use to convert data to numerical form
Qualitative data
data whose form is textual, non numerical. Typically gathered by researchers who come from interpretivist or critical paradigms of knowing
Univariate
one variable
Bivariate
two variables simultaneously
Descriptive statistics
statistical computations describing the characteristics of a sample. Descriptive statistics merely summarize a set of sample observations.
Inferential statistics
the body of statistical computations relevant to making inferences from findings based on sample observations to some larger population
Alternative hypothesis (H1)
there is a relationship between variables
Null hypothesis (Ho)
There is no statistical relationship between variables
"Statistically significant"
If p < .05, “reject the null”
Components included in a full research article
Introduction, Lit Review, Hypotheses, Method Section, Results Section, Discussion Section, References, Appendix
Non-participant observation
the researcher watches the subjects of his or her study, with their knowledge, but without taking an active part in the situation under scrutiny
Participant observation
method employed in qualitative research to study communication phenomena in their natural settings. The researcher can adopt any of several roles in the field.
Characteristics of focus group research
Less control, Require skilled moderators, Can be difficult to analyze
Purposes of qualitative interviewing
Phenomena not directly observable, detailed cognitive processes, language use
Phenomenology
Approach researcher would take where focus in on participants’ personal experience, remove personal opinion and bias, no judgment
Interpretivism
Hold on to judgments and predictions as a researcher
Three forms of interview protocols
Structured (not qualitative), Semi-structured, Unstructured
Practices
socially recognized talk or action. Ex. delivering bad news, providing social support
Episodes
dramatic events. Ex. divorce, natural disasters
Encounters
people meeting and interacting. Ex. interviews, bus-stop conversation
Relationships
between people in social roles. Ex. mother-child, spousal communication
Focus of qualitative interviewing
Understanding meanings and rules for meaning making
Description of qualitative interviewing
Asking in a flexible and continuous manner, Primarily participant talking, Digging for detailed information.
Nominal
Most simplistic level, Nominal = Names, Categorical, Ex. Biological sex – Male and Female (Names, no Numbers), Religious affiliation, Political affiliation
Ordinal
Rank ORDER logically, Levels represent more or less of variable, Distance between levels doesn’t matter, Ex. Class Status, Level of education
Interval
Distance between attributes or levels must have meaning, Tells how much, Standardized intervals between each level, Specific number, Ex. Temperature (60 degrees is twice as warm as 30 degrees), IQ Scores
Ratio
Most sophisticated level, Distance between attributes or levels must have meaning, PLUS - Based on a true zero point, you can have a complete absence of the variable. In social science, we tend to view things as ration rather than interval
Continuous measure
increases steadily in tiny fractions, MEAN
Discrete (Categorical)
one category or another without middle steps, MODE
Continuous hypothesis
stating change along a continuum
Directional hypothesis
states the direction of the difference
Nondirectional hypothesis
states there will be a difference
Difference hypothesis
compare two attributes of the IV
Three criteria for causality
Time order (cause before effect, Correlation (have to be related), Non-spurious relationship (no outside factor)

Structured interview

The same questions are asked in the same way, same order for all participants

Semi-structured interview

Researcher works with suggested questions whose wording and arrangement can vary from one participant to another

Unstructured interview

Researcher has few, if any, pre-fomulated questions

The Complete-Partcipant role

participants lack awareness of being observed

Participant as observer

the researcher participates in the activities of the group, with group members aware of researcher

Observer as participant

researcher has minimal involvement with group members and they are aware of the role

Complete observer

researcher observes the group with no participation, unaware of observation