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Flashcard Quiz 1

For Research and Design

TermDefinition
To ensure generalizability, a GOOD Sample must be representative of the population.
Random sampling brings participants into the sample.
Random assignment places participants into the treatment or control group.
Experiments use random assignment which allows for cause-and-effect relationship.
Simple Random Sample (SRS) is sampling method in which each member of the population has an equal chance of being selected
Cluster sampling occurs when an SRS of heterogeneous clusters is selected. All members of each cluster are then sampled.
Stratified Sampling occurs when the population is divided into homogeneous strata. A SRS is selected from each strata based on the strata’s proportion in the population.
Sampling bias is due to the use of volunteers, attrition (participants leave the study before its complete), and when the researchers drop subjects.
Blinding is the best method to control for experimenter bias because it keeps the experimenters unaware of which group participants are in.
Random assignment is the best method to control for confounding across groups.
Created by: Bizzie B
 

 



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