module 14 Flashcards
factorial design
a design with more than one iv
effects of drinking coffee and eating a twinkie on exam performance
factorial design +
allows comparisons of more than 2 types of treatment
fewer subjects
allows comparisons of all treatments with control condition
allows for use of a placebo group with control and experimental groups
factorial design -
making multiple comparisons may lead us to draw an erroneous conclusion
factorial notation
notation that indicates how many IVs are used in a study and how many levels are used for each variable
main effect
effect of a single iv
interaction effect
effect of each iv across the levels of the other iv
2x2 factorial design
used to look at effects of manipulating 2 iv on 2 dv
effects of drinking coffee and eating a twinkie on exam performance and incidence of bed wetting