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Definition
| Subste/smaller part of population that is to be studied |
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Definition
| all members of a class/set from which a sample may be drawn and about whom the researcher wishes to draw conclusions |
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| Everyone in a population has an equal chance of being studied |
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| Everyone in population doesn't have an equal chance to be studied; limits generalizability |
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| The ability to apply conclusions to the entire population being studied |
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Definition
| Every relevant subgroup is randomly selected in proportion to its size |
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Definition
| An individual actively participating in a study |
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| studied that are repeated often under different conditions in order to ensure reliability |
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Definition
| The variable that is manipulated (i.e. drug usage) |
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Definition
| The response that is measured after the manipulation of an independent variable (i.e. lessening of duration/number/intensity) |
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Definition
| The group exposed to the manipulation of independent variable |
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Definition
| Not exposed to manipulation of independent variable |
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Definition
| Each participent has equal chance of being assigned to any of the groups |
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Definition
| stimulus other than the variable an experimenter explicitly introduces into a research setting that effects a participant's behavior (not wanted in an experiment) |
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Definition
| subjects not randomly assigned; no real results |
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Definition
| Definition of a variable in terms of the set of methods/procedures used to measure/study the variable (i.e. define the dosage amount) |
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Definition
| When research participant's behavior changes because they know they're being studied or because of expectations |
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Definition
| Inactive substance give in place of a drug in psychological research |
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Definition
| The participant believes they experience a change due to the druge, which is reall a placebo |
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Definition
| Used to control researcher/subject bias; neither the researcher nor subject know who is in which group |
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Definition
| Expectations of the researcher influence the results or what is recorded/measured |
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Definition
| measure two or more variables in order to determine if they're related; cannot determine cause and effect |
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Definition
| occurs when the value of one variable increases in value with the other |
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Definition
| Value of one variable increases while the other decreases |
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Definition
| A number that represents the strength of the relationship between variables; ranges in value from zero to one (+/-). Coefficient of one is a perfect relationship (very predictable). |
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Definition
| Thinking ther is a relationship when there really isn't (Confounding variable possible) |
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Definition
| A research method that occurs in a natural setting. The researcher systematically records what occurs in an unobtrusiv manner so the behavior of subjects isn't altered |
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| Interobserver reliability |
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Definition
| The amount of agreement between two or more observers recording the same event |
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Definition
| In-depth study of a single subject which acan include intervies, observations and test results. It is often irreproduceable |
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Definition
| Ask people about their thoughts/behaviors/opinions; data collected through interviews and questionaires. Reliability and validity is an issue |
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Definition
| Most persuasive and weakest type of evidence |
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Definition
| Reliable form of evidence; scientific method followed |
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Term
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Definition
Used to: - summarize/describe large amounts of data
- compare individuals/groups in a number of ways
- Determine if behaviors are related (vary together/correlated)
- Predict future behavior using current information
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Term
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Definition
| Average squared distance between each score and the mean (eliminates negative numbers) |
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Definition
| Average distane between each score and the mean (The square root of the variance) |
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Term
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Definition
| Mean>Median (Bell curve leans to the left) |
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Term
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Definition
| Mean<Median (Bell curve leans to the right) |
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