Chapter 8: Factorial Designs Flashcards
What is a factorial design?
A design with more than one IV
What is meant by a 3 × 4 × 5 factorial design?
That it has 3 IVs with where each IV has 3, 4, and 5 levels respectively
What is a main effect?
the difference between the level means of one independent variable
What is an interaction effect?
when the effect of one IV depends on the level of another IV
what are the characteristics of an independent groups factorial?
all IVs are manipulated, between subject variables & groups are formed via random assignment
what are the characteristics of a matched groups factorial design?
all IVs are manipulated, between subject variables & groups are formed via matching
what are the characteristics of an ex post facto factorial design?
all IVs are between-subject subject variables. Groups are by definition unequal, but you can use matching to increase equivalence
what are the characteristics of a PxE factorial design?
the IVsarebetween-subject variables, where there is at least one manipulated and one subject IV
what are the characteristics of a mixed PxE factorial?
there is at least 1 within-subjects IV and 1 between-subjects subject variable
what are the characteristicsof a mixed factorial?
there is at least 1 within-subjects IV and 1 between-subjects manipulated variable
wha are the characteristics of a repeated measures factorial?
all IVs are within-subjects manipulated variables
when can you use complete or partial counterbalancing in a factorial design?
when an IV is tested once per condition in a repeated measures factorial
when can you usereverse counterbalancing or block randomisation in a factorial design?
when an IV is tested more than once in a repeated measures factorial design
when can causal conclusions be drawn in a PxE design?
if a significant main effect occurs for the manipulated Environment factor
when can causal conclusions not be drawnin PxE designs?
when a main effect occurs for the Person factor or if an interaction occurs
