Relacionar Columnas Social Work Research Versión en línea Group Design 1 por Jennifer Colin 1 Mortality 2 Trend study 3 Cohort study 4 Cross-sectional survey design 5 Control group 6 Classical experimental design 7 History 8 Independent variable 9 Testing effects 10 Comparison group 11 Knowledge level continuum 12 Instrumentation error A group of randomly assigned research participants in a study who do not receive the experimental treatment and are used for comparison purposes; not to be confused with comparison group This kind of research design takes different samples of people who share a similar characteristic at different points in time The range of knowledge levels, from exploratory to descriptive to explanatory, at which all research questions can be answered A threat to internal validity that refers to the principle that take pretests will affect posttest scores This kind of research design takes place when research participants have a certain condition and/or receive a particular treatment and are sampled over time A variable that is not dependent on another variable but is believed to cause or determine changes in the dependent variable A threat to internal validity that refers to the loss of research participants through normal attrition over time in research designs that required pretests and posttests O A threat to internal validity that refers to events not accounted for in the research designs that may alter the second and subsequent measurements of the dependent variable A nonexperimental group to which research participants have not been randomly assigned for purposes of comparison with the experimental group; not to be confused with control group A threat to internal validity that refers to the weaknesses of a measuring instrument itself, such as invalidity, unreliability, improper administration, or mechanical breakdown Experimental group (O1) (X) (O2) Control group (O1) (O2)
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