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psy CH 2 studycards

QuestionAnswer
identifying a sample in such a way that everyone in the population of interest has an equal chance of being involved in the study. random sample
reasoning proceeding from broad basic principles applied to specific situations. deductive vs. inductive reasoning
able to be tested in objective ways. empirical
a general statement about the way variables relate that is objectively falsifiable theories-ideas about laws that govern phenomena hypotheses
condition,event, or situation that is studied in an experiment. variable
Condition or event that is thought to be a factor in changing another condition or event I.V.
condition or event that you expect to change as a result of variations in the independent variable. D.V
An operational definition defines something (e.g. a variable, term, or object) in terms of the specific process or set of validation operational definition
controlled observation, in which researchers manipulate the presence or amount of the independent variable to see what effect it has on the dependent variable. experiment
group that is exposed to the independent variable experimental group
group that has not been or will not be exposed to the independent variable. control group
study in which neither the participant neither nor the researched knows what treatment or procedure the participant is receiving double-blind procedure
statistic express the strength and nature of a relationship between two variables correlation coefficient
relationship in which scores on two variables increase together Positive correlation
relationship in which scores on one variable increase as scores on another variable decrease. Negative correlation
arithmetic average of a set of scores Mean
statistical index of how scores vary within a group standard deviation
repeated testing of a hypothesis to insure that the results you achieve in one experiment that are not due to chance. replication
Created by: ninjabrah
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