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Research Methods of Psychology
Chapter 9
9
Psychology
Undergraduate 2
11/10/2008

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Term
Complex Designs (Factorial Designs)
Definition

two or more independent variables are studied simultaneously in one experiment

 

identified by specifying the number of levels of each of the independent variables in the experiment

Term
Interaction Effect
Definition
occurs when the effect of one independent variable difers depending on the level of a second independent variable
Term
Confirmation Bias
Definition
when researchers ask questions in a manner that is presuming
Term
Main Effect
Definition
represents the differences among the average performace for each level of an independent variable collapsed across the levels of the other independent variable
Term
nonparallel lines in the graph
Definition
this suggests an interaction effect
Term
Parallel lines in the graph
Definition
this suggests no interaction effect
Term
Sleeper Effect
Definition

the impact of a persuasive message increases over time

  • commonly, forget reasons you discounted a message at the time of presentation (discounting cue)
  • you remember the message but forget why you were not persuaded originally
Term
Crossover interaction
Definition
  • cannot fill in the cells by knowing one cell
  • when plotted , the two lines would actually cross over each other
Term
Mixed Designs
Definition

when we combine between-and within- subject designs

  • may want to investigate 2 different groups, but in a within-subjects design
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