the tendency for individuals to overestimate the level at which other people share their beliefs, attitudes, and behaviors
all the cases in a group being studied, from which samples may be drawn. anyone or anything that could possibly be selected to be in the sample
the use of chance procedures in psychology experiments to ensure that each participant has the same opportunity to be assigned to any given group.
the statement of procedures the researcher is going to use in order to measure a specific variable.
Participants act a certain way because they're aware they're in an experiment.
is a sample in which each member of the population has an equal chance of being selected to represent the whole.
The experimental factor that is manipulated; the variable whose effect is being studied. Factors that are deliberately changed and effect the dependent variable.
the phenomenon of perceiving a relationship between variables even when no such relationship exists
experimental results caused by expectations alone; any effect on behavior caused by the administration of an inert substance or condition which the recipient assumes is an active agent.
a measure of the extent to which two factors vary together, and thus how well either factor predicts the other.
A change in the independent variable will result in a change in this. Result of the experiment; ultimate outcome.
an experimental procedure in which both the research participants and the research staff are ignorant about whether the research participants have received the treatment or a placebo.