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Chapter 2

STUDY
PLAY
Causal logic
The relationship between a condition or variable and a particular consequence, with one event leading to the other.
Code of ethics
The standards of acceptable behavior developed by and for members of a profession.
Content analysis
The systematic coding and objective recording of data, guided by some rationale.
Control group
The subjects in an experiment who are not introduced to the independent variable by the researcher.
Control variable
A factor that is held constant to test the relative impact of an independent variable.
Correlation
A relationship between two variables in which a change in one coincides with a change in the other.
Cross-tabulation
A table or matrix that shows the relationship between two or more variables.
Dependent variable
The variable in a causal relationship that is subject to the influence of another variable.
Ethnography
The study of an entire social setting through extended systematic observation.
Experiment
An artificially created situation that allows a researcher to manipulate variables.
Experimental group
The subjects in an experiment who are exposed to an independent variable introduced by a researcher.
Hawthorne effect
The unintended influence that observers of experiments can have on their subjects.
Hypothesis
A speculative statement about the relationship between two or more variables.
Independent variable
The variable in a causal relationship that causes or influences a change in a second variable.
Interview
A face-to-face or telephone questioning of a respondent to obtain desired information.
Mean
A number calculated by adding a series of values and then dividing by the number of values.
Median
The midpoint or number that divides a series of values into two groups of equal numbers of values.
Mode
The single most common value in a series of scores.
Observation
A research technique in which an investigator collects information through direct participation and/or by closely watching a group or community.
Operational definition
An explanation of an abstract concept that is specific enough to allow a researcher to assess the concept.
Percentage
A portion of 100.
Qualitative research
Research that relies on what is seen in field or naturalistic settings more than on statistical data.
Quantitative research
Research that collects and reports data primarily in numerical form.
Questionnaire
A printed or written form used to obtain information from a respondent.
Random sample
A sample for which every member of
Reliability
The extent to which a measure produces consistent results.
Research design
A detailed plan or method for obtaining data scientifically.
Sample
A selection from a larger population that is statistically representative of that population.
Scientific method
A systematic, organized series of steps that ensures maximum objectivity and consistency in researching a problem.
Secondary analysis
A variety of research techniques that make use of previously collected and publicly accessible information and data.
Survey
A study, generally in the form of an interview or questionnaire, that provides researchers with information about how people think and act.
Validity
The degree to which a measure or scale truly reflects the phenomenon under study.
Value neutrality
Max Weber's term for objectivity of sociologists in the interpretation of data.
Variable
A measurable trait or characteristic that is subject to change under different conditions.
Use of Existing Sources
The use of secondary analysis and content analysis to conduct research.
1936 Literary Digest Presidential Poll
In 1936 Literary Digest polled 2.4 million people consisting of its readers, registered auto owners, and telephone users. The digest readers income were well above national averages. The election was between Alf Landon and FDR. The poll showed that Landon would win by popular vote.
Population
The entire group that is of interest to the study.