exam 2 ajs Flashcards
(127 cards)
pre-testing
The measurement of the dependent variable among subjects.
post testing
The remeasurement of a dependent variable among subjects after they’ve been exposed to an independent variable
experimental group
in experimentation, a group of subjects to whom an experimental stimulus is administered
Control group
in experimentation, a group of subjects to whom no experimental stimulus is administered and who should resemble the experimental group in all other respects. A comparison of the control group and experimental group at the end of the experiment points to the effect of the experimental stimulus
double-blind experiment
An experimental design in which neither the subjects nor the experimenters know which is the experimental group andwhich is the control group
randomization
A technique for assigning experimental subjects to experimental and control groups randomly.
matching
in connection with experiments, the procedure whereby pairs of subjects are matched on the basis of their similarities on one or more variables, and one member of the pair is assigned to the experimental group and the other to the control group.
internal invalidity
refers to the possibility that the conclusions drawn from experimental results may not accurately reflect what went on in the experiment itself.
external invalidity
refers to the possibility that conclusions drawn from experimental results may not be generalizable to the “real” world.
respondent
A person who provides data for analysis by responding to her survey questionnaire.
questionnaire
A document containing questions and other types of items designed to solicit information appropriate for analysis. Questionnaires are used primarily on survey research but also in experiments, field research, and other modes of observation.
Open ended questions.
questions for which the respondent is asked to provide his or her own answers. In-depth, qualitative interviewing relies almost exclusively on open ended questions.
closed ended questions
Survey questions in which the respondent is asked to select an answer from among a list provided by the researcher. Popular in survey research because they provide a greater uniformity of responses and are more easily processed then open ended questions.
bias
that quality of a measurement device that tends to result in a misrepresentation of what is being measured in a particular direction. For example, the questionnaire item ‘‘Don’t you agree that the president is doing a good job?’’ would be biased in that it would generally encourage more favorable responses.
contingency question
a survey question intended for only some respondents, determined by their responses to some other question. For example, all respondents might be asked whether they belong to the cosa nostra, and only those who said yes would be asked how often they go to company meetings and picnics. The latter would be a contingency question.
matrix questions
offer an efficient format for presenting a set of closed- ended questionnaire items that have the same response categories.
response rate
the number of people participating in a survey divided by the number selected in the sample, in the form of a percentage.This is also called the the completion rate or, in self- administered surveys, the return rate: the percentage of questionnaires sent out that are returned.
interview
A data- collection encounter in which one person ( an interviewer) asks questions of another ( a respondent). Interviews may be conducted face-to face- or by telephone.
probe
a technique employed in interviewing to solicit a more complete answer to a question. It is a nondirective phrase or question used to encourage a respondent to elaborate on an answer. Examples include ‘’ Anything more?’’ and ‘’ How is that?’’
random-digit dialing
a sampling technique in which random numbers are selected from within the ranges of numbers assigned to active telephones.
computer-assisted telephone interviewing (CATI)
A data- collection technique in which a telephone- survey questionnaire is stored in a computer, permitting the interviewer to read the questions from the monitor and enter the answers on the computer keyboard.
secondary analysis
a form of research in which the data collected and processed by one researcher are reanalyzed- often for a different purpose- by another. This is especially appropriate in the case of survey data. Data archives are repositories or libraries for the storage and distribution of data for secondary analysis.
reactivity
the problem that the subjects of social research may react to the fact of being studied, thus altering their behavior from what it would have been normally.
naturalism
an approach to field research based on the assumption that an objective social reality exists and can be observed and reported accurately.