NCE Exam - Research and Program Evaluation accurate 100%

NCE Exam - Research and Program Evaluation accExperimental research - ANSWER the process of gathering data in order to make evaluative comparisons regarding different situations. The experiment - ANSWER The most valuable type of research (used to discover cause-and-effect relationships) You need at least 30 individuals to conduct a 'true' experiment. - ANSWER Correlational research requires 30 subjects per variable. Quasi-experiment - ANSWER Uses PRE-EXISTING groups, so the independent variable (IV) cannot be altered (i.e., gender or ethnicity), and can't state with any statistical confidence that the IV caused the dependent variable (DV). Correlation research is quasi-experimental and does not yield _____ - ____ data. - ANSWER cause-effect Parsimony (also known as Occam's Razor) - ANSWER interpreting the results in the simplest ways (Literally a tendency to be miserly and not overspend.) Ex post facto study - ANSWER A type of quasi-experiment (literally means 'after the fact') connoting a correlational study in which preexisting groups are utilized Independent variable - ANSWER the variable the researcher manipulates, controls, alters, or wishes to experiment with (memory: 'I' manipulate the IV) Dependent variable - ANSWER expresses the outcome or the data regarding factors one wants to measure (memory: 'D' in dependent and data) Internal validity - ANSWER Refers to whether the DVs were truly influenced by the experimental IVs or whether other factors had an impact. Threats to internal validity - ANSWER maturation of subjects (psychological and physical changes including fatigue due to time involved), mortality (subjects withdrawing), instruments used to measure the behavior or trait, or statistical regression (notion that extremely high or low scores would move toward the mean if utilized again) External validity - ANSWER Refers to whether the experimental research results can be generalized to larger populations (other people, settings, conditions). [If the results of the study only apply to the population in the study then external validity is LOW.] Causal Comparative design - ANSWER a true experiment WITHOUT random assignment (Data from the causal comparative ex post factor [after the fact] design can be analyzed w urate 100%