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| A broad idea or set of closely related ideas that attempt to explain observations. |
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| An educated guress that derives logically from a theory; and prediction that can be tested. |
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| A definition that provides an objective description of how a variable is going to be measured and observed in a paticular study. |
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| Research that determines basic dimensions of a phenomenon, difining what it is, how often it occurs, and so on. |
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| Case Study or Case History |
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| An in depth look at a single individual |
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| Research tha exmaines the relationships between variables, whose purpose is to examine whether and how two variables change together. |
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| The circumstance where a variable has not been measured accounts for the relationship between two other variables. Third variables are also known as confounds. |
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| A special kind of systematic observation, used by correlation researchers, that involves obtaing measures of variables of intrerest in multiple waves over time. |
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| A carefully regulated procedure in which the researcher manipulates one or more variables that are believed to influence some other variable. |
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| Researcher's assignment of participants to groups by chance, to reduce the likelihood that an experiment's result will be due to preexisting differences between groups. |
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| A manipulated experimental factor; the variable that the experimenter changes to see what its effects are. |
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| A person who is given a role to play in a study so that the social context can be manipulated |
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| The particapants in an experiment who recieve the drug or other treatment under the study. |
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| The participants in an experiement who are as much like the experimental group as possible and who are treated in every other way like the experimental group exvept for a manipulated factor, the independent variable. |
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| The degree to which an experimental design actually reflects the real world issures it is supposed to address |
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| The degree to which changes in the dependent variable are due to the manipulationj of the independent variable. |
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| Occurs when the experimenter's expectations influnence the outcome of the research. |
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| Any aspects of a study that communicate to the participants how the experimenter wants them to behave |
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| Occurs when the behavior of research participants during the experiement is influneced by how they think they are supposed to behave or their expectations about what is happening to them. |
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| In a drug case study, a harmless substance that has no physiological effect, given to participants in a control group so that they are treated identically to the experimental group except for the active agent. |
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| An experimental design in which neither the experimental nor the particpants are aware of which participants are in the experimental group and which are in the control group until the results are calculated. |
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| The entire group about which the investigator wants to draw conclusions. |
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| The subset of the population chosen by the investigator for study. |
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| A sample that gives every member of the population an equal chance of being selected. |
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| The observation of behavior in a real world setting. |
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| Mathematical procedures that are used to describeand summarize sets of data in a meaningful way. |
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| A measure of central tendency that is the average of the sample. |
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| A measure of central tendency that is the middle score in a sample. |
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| A measure of central tendency that is the most common score in as sample. |
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| A measure of dispersion that is the difference between the highest ande lowest scores. |
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| A measure of dispersion that tells us how much socres in a sample differ from the mean of the sample |
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| Mathematical methods that are used to indicate whether results for a sampel are likely to gereralize to a population |
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