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a study in which both participants and experimenters are unaware of who has obtained the treatment
the study of behavior in naturally occurring situations without manipulation or control on the part of the observer
this can slant the results of a survey because people who participate in research studies often differ from people who do not
stress and health are thought to have this since stress goes up as health deteriorates, or goes down
in an experiment, the factor that is being measured and that may change in response to manipulations of the independent variable
a research method in which participants do not know whether they are receiving the treatment or not
the group in which participants do now know whether they are receiving the treatment or not
a controlled scientific procedure to determine whether certain variables manipulated by the researcher have an effect on other variables
a survey population, selected by chance, which fairly represents the general population
the need for achievement and salaries are thought to have this since as one goes up, so does the other
an agreement by an individual to paricipate in research agter receiving information about the purpose of the study and the nature of the treatment
single blind study
a study in which the participants are unaware of whether they are in the control group or the experimental group
cross sectional method
this type of study is done as researchers select a sample that includes people of different ages
a sample drawn in such a way that known subgroups within a population are represented in proportion to their numbers in the general population
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