lecture 11 Flashcards
what are complex experimental designs
experiments that have more than one IV (factorial designs) or DV (multivariate designs)
what are factorial designs
researches that have multiple independent variables
what are multivariate design
researches with multiple dependent variables
what is a confirmatory hypothesis?
there is a prediction of a specific result to experiment
what is an exploratory hypothesis
the researcher has no specific result in mind so the hypothesis is open-ended
Dr. Chidambaram predicts that high room temperatures are associated with increased levels of crime. She is proposing which type of hypothesis?
a
null hypothesis
b
exploratory hypothesis
c
confirmatory hypothesis
d
factorial hypothesis
C
main effects vs interaction effects vs cell effects
main effects (marginal means) are the individual effects of each IV in comparison to each level
interaction effects or COMBINED EFFECTS talk about the trend of effects with all IVs (ex. it depends (so the result only occurs when both other IV is present or absent)
cell effects are when one level of the IV is compared to a level of another IV
When calculating main effects, which of the following means refer to main effects?
a
cell
b
grand
c
weighted
d
marginal
D
how many IVS and levels are in 3 x 3 design
2 IVs and 3 levels
what is the purpose of a posthoc test?
allow researchers to compare the means of the levels of the IV
what are higher-order factorial designs?
3 or more independent variables, they will have main effects (effect of individual IV), two way interaction effects, and 3 way interaction effects
how many IVS and levels are in a 2x2x2 research design
3 IVs and 2 levels each
what are repeated measures of complex designs?
participants are exposed to all levels of the independent variable
what is a mixed design research
when the research uses a mixture of between-subject and repeated measure design
the more complex the research design, the ________ participants needed (more or less)
more
