Exam1_ReviewSheet

Exam1_ReviewSheet - Exam 1 Review Sheet for PSY 240 Some...

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Exam 1 Review Sheet for PSY 240 Some questions are listed below that may be helpful in encouraging you to think about the material for the first exam. Not all of the material from this sheet may be covered on the exam, and not all material from the exam is directly addressed by these questions. METHODS 1. What are the two types of research discussed in class? What can be learned from each? -Correlation research , Experimental Reserch. Correlation Research : the study of the naturally occurring relationships among variables Experimental Research: studies that seek clues to cause-effect relationship by manipulating one or more factors(independent variable) while controlling others(holding them constant) 2. What is a hypothesis? -a testable proposition that describes a relationship that may exist between events. 3. What is meant by an operational definition? -what exactly (in concrete terms) is being measured or manipulated 4. What is a correlation coefficient and what information does it provide? -positively, Negative, NO, Levels -1,1 Perfect, .5,-.5 Moderate, 0 NO 5. What is random sampling? What is its purpose? How does it relate to external validity? -survey procedure in which every person in the population being studied has an equal chance of inclusion. External validity Generalize ability to population Assume random selection. 6. What is random assignment? What is its purpose? How does it relate to internal validity? Radom Assignment: the process of assigning participants to the conditions of an experiment such that all persons have the same chance of being in a given condition. (Note the distinction between random assignment in experiments and random sampling in surveys. Random assignment helps us infer cause and effect random sampling helps us generalize to a population) Internal validity: Designed to allow strong conclusions Random Assignment 7. What is an independent variable? A variable that is systematically manipulated by the experimenter so that its value Is independent of other variables in the study (most importantly it cannot be affected by the dependent variable ) 8. What is a dependent variable? A variable that is just measured so that it value depends on other variables in study. 9. What is a main effect? How do you determine if there are main effects in experiment results? effects of an independent variable on a dependent variable averaging across the levels of any other independent variables. 10. What is an interaction? How do you determine if there is an interaction in experiment results? 11. What is mundane realism? What is experimental realism? Mundane realism: degree to which an experiment is superficially similar to everyday situation Experimental realism: degree to which an experiment absorbs and involves it’s participants. . 12. What are some important issues to consider when conducting survey research?
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Exam1_ReviewSheet - Exam 1 Review Sheet for PSY 240 Some...

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