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| 933119954 | Hypothesis | A tenative statement about the relationship between two or more variables. | 0 | |
| 933119955 | Variables | Measurable conditions, events, characteristics, or behaviors that are controlled or observed in a study. | 1 | |
| 933119956 | Theory | System of interrelated ideas used to explain a set of observations. | 2 | |
| 933119957 | Operational Definition | Describes the actions or operations that will be used to measure or control a variable. | 3 | |
| 933119958 | Participants/Subjects | Persons or animals whose behavior is systematically observed in a study. | 4 | |
| 933119959 | Data Collection Techniques | Procedures for making empirical observations and measurements. | 5 | |
| 933119960 | Journal | Periodical that publishes technical and scholarly material, usually in a narrow defined area of inquiry. | 6 | |
| 933119961 | Research Methods | Consist of differing approaches to the observation, measurement, manipulation, and control of variables in empirical studies. | 7 | |
| 933119962 | Experiment | Research method in which the investigator manipulates a variable under carefully controlled conditions and observers whether any changes occur in a second variable result. | 8 | |
| 933119963 | Independent Variable | Condition or event that an experimenter varies in order to see its impact on another variable. | 9 | |
| 933119964 | Dependent Variable | Variable that is thought to be affected by manipulation of the independent variable. | 10 | |
| 933119965 | Experimental Group | Consists of the subjects who recieve some special treatment in regard to the independent variable. | 11 | |
| 933119966 | Control Group | Subjects who do not receive the special treatment given to the experimental group. | 12 | |
| 933119967 | Extraneous Variables | Variables other than the independent variable that seem likely to influence the dependent variable in a specific study. | 13 | |
| 933119968 | Confounding of Variables | Occurs when two variables are linked in a way that makes it difficult to sort out their specific effects. | 14 | |
| 933119969 | Random Assignment | When all subjects have an eqaul chance of being assigned to any group or condition in the study. | 15 | |
| 933119970 | Correlation | Exists when two bariables are related to each other. | 16 | |
| 933119971 | Correlation Coefficient | Numerical indexof the degree of relationship between two variables. | 17 | |
| 933119972 | Naturalistic Observation | Researcher engages in careful observation of behavior without intervening directly with the subjects. | 18 | |
| 933119973 | Reactivity | Occurs when a subject's behavior is altered by the presence of an observer. | 19 | |
| 933119974 | Case Study | In-depth investigation of an individual subject. | 20 | |
| 933119975 | Survey | Questionaire or interview to gather information about specific aspects of participants background, attitudes, beliefs, or behavior. | 21 | |
| 933606415 | Replication | Repetition of a study to see whether the earlier results are duplicated. | 22 | |
| 933606416 | Meta-analysis | Combines the statistical results of many studies of the same question, yielding an estimate size and consistency of a variable's effects. | 23 | |
| 933606417 | Sample | Collection of subjects selected for observation in an empirical study. | 24 | |
| 933606418 | Population | Larger collection of animals or people (from which the sample is drawn) that researchers want to generalize about. | 25 | |
| 933606419 | Sampling Bias | exists when a sample is not representative of the population from which it was drawn | 26 | |
| 933606420 | Placebo Effect | Change in a participant's illness that results from a belief that the treatment will have an effect rather than the actual treatment | 27 | |
| 933606421 | Social Desirability Bias | A tendency to give socially approved answers to questions about oneself. | 28 | |
| 933606422 | Halo Effect | Occurs when someone's overall evaluation of a person, object, or institution spills over to influence more specific ratings. | 29 | |
| 933606423 | Experimenter Bias | Occurs when a researcher's expectations or preferences about the outcome of the study influence the results obtaine. | 30 | |
| 933606424 | Double-blind Procedure | Research strategy in which neither subjects nor experimenters know which subjects are in the experimental or control groups. | 31 |
