Factional Design Flashcards
inferential statistics: statistics designed to determine whether results of sample data can be ___ to a population
generalized
Indecent group design aka ___ subjects design: are experimental design to which participants are randomly assigned to only __ experimental condition
between, one
a t-test is an inferential statistical test used to evaluate the ___ between 2 means
independent samples t- test = are used when participants are randomly assigned to only __ level of the independent variable
__ samples t- test are used when participants are assigned to both levels of the independent variable.
difference, 1, paired
one way design: one way experimental design has __ independent variable.
there has to be atleast 2 __ of the independent variable.
1, levels
problem with one way designs: in the real world there are __ causes of behavior.
one way designs only look at the effect of __ iv, they may inaccurately represented the true causes of the DV.
multiple, 1
factorial design: experimental research include __ than one IV( ex. more than one factor.
enables researchers to simultaneously test the unique effects of multiple independent variables.
enables researchers to rest of the independent variables __ with each other to affect the dependent variable
more, interact
factorial design terminology -
- a design with _ factors is called two way factorial design
- a design with 3 factors is called 3 way factorial design.
2,
factorial design terminology - each number indicates a factor
- 2x2 factorial design - 2 factors with 2 levels = __ cells
- 2x3 factorial design - 2 factors; one with 2 levels and one with 3 levels = __ cells
- 2x2x2 factorial design - _ with 2 levels each = 8 cells
4,6, 3
Main Effects - the effect of only __ factor on the dependent variable, controlling for the effect of all other factors.
a main effects is analogous to a study with 1 independent variable.
one,
Interactions: when the relationship between one IV and participants behavior behavior on the DV __ on the level of a second IV.
think of it as the joint effect of 2 or more IVs on the DV.
depends,
Interpreting main effects with interactions: A significant interaction makes it difficult to interpret main effects because the effect of one IV __ as a result of the other IV.
if you have a main effect and an interaction focus on __ the interaction instead of the main effect.
changes, interpreting