Details Title: 130 exam 2 Description: research strategies and validity Total Flash Cards: 28 Created: 04/16/2009 20:50:09		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Psychology Flashcards
Cards in this set: Term quantitative research Definition based on measuring variables for individual participants to obtain scores, usually numerical values, that are submitted to stat. analysis fr summary and interpretation Term qualitative research Definition based on making observatinos that are summarized and interpreted in a narrative report Term research strategy Definition general approach to research determined by the kind of question that the research study hopes to answer Term descriptive research strategy Definition not concerned with rships between variables but with the description of individual variables. Term linear relationship Definition the data points produced by the changing values tend to from a straight line pattern. Term curvilinear rship Definition consistent, predictable relationship between the two variables, but now the pattern is a curved line Term non experimental research design Definition Produce a description of the relationship between two variables but do not attempt to explain the relationship. ex. There is a relationship between gender and vergal ability. girls tend to have higher verbal skills than boys, but we don't know why. Term validity Definition research study is the degree to which the study accurately answers the question it was intended to answer Term threat to validity Definition any component of a research study that introduces questions or raises doubts about the quality of the research process or the accuracy of the research results. Term internal validity Definition produces a single, unambiguous explanation for the relationship between two variables. Term threat to internal validity Definition any factor that allows for an alternative explanation Term external validity Definition refers to the extent to which we can generalize the results of a research study to people, settings, times, ect. than those used in the study Term threat to external validity Definition any characteristic of a study that limits the generality of the results Term confounding variables Definition an extraneous variable that changes systematically along with the two variables being studied .A confounding variables provides an alternative explaination for the observed relatinoship between the two variabe and, therefore, is a threat to internal validity Term assignment bias Definition occur when the process used to assign different participants to different treatments produces groups of individuals with noticably different characteristics Term history Definition a threat to internal validity because any diff. that are observed between treatment condition may e caused by history instead of treatment. Term Maturation Definition threat to internal validity because observed diff. between treatments can be caused by maturation not treatment Term instrumentation Definition refers to changes in the measuring instrument that occurs during a research study in which participants are measured in a series of treatment conditions. Term testing effect (order effects) Definition occurs when the experience of being tested in one treatment condition (participationg and being measured) has an influence on the participant's scores in a later treatment condition. testing effects threaten internal validity because any observed differenes between treatment conditions may be caused by testing effects rather than the treatments. Term multiple treatment interference Definition responses effect ofther testing reponses Term artifact Definition a nonnatural feature accidentally introduced into something being observed. fear or being startled. Term single blind Definition the researcher does not know the predicted outcome Term demand characteristics Definition any of the potential cues or features of a study that (1) suggest to the participants what the purpose and hypothesis is (2) influences that participants to respond or behave in a certain way Term reactivity Definition when participant modify their natural behavior in response to the fact tha they are participation in a research study or the knowledge that they are being measured Term good subject role Definition subjects attempt to provide responses that will corrobrate the investigatros hypothesis. they have identified the hypothesis Term negative subject role Definition attempt to refute the hypothesis. they know the hypothesis Term faithful subject role Definition good participants. Term apprehensive subject role Definition being overly concerned that their performance in the study will be used to evaluate their abilities. they place themselves in desirable lgiht