week 6, experimental designs

Question 1

2 examples of complex experimental designs

Answer 1

1. single factor design
   2.multifactor design

Question 2

single factor -> 1IV
multifactor -> 2 or more IV

Question 3

what is the interaction between IVs

Answer 3

how participants responds to different levels of on IV depends on the levels of another IV

Question 4

what is an interaction

Answer 4

a relationship between two or more variables
the ability to detect interactions is a key reason why multi-factor experiments are conducted

Question 5

how many possible effects are there in a 3-factor design

Answer 5

main effect IV1
main effect IV2
main effect IV3

two-way interaction IV1&IV2
two-way interaction IV1&IV3
two-way interaction IV2&IV3
Three-way interaction (IV1&IV2&IV3)

Question 6

What is a three-way interaction?

Answer 6

2 way interaction between 2 IV’s depends on the levels of a third IV

Question 7

What is a mixed design?

Answer 7

combining between subjects IVs & within-subjects IVs in one design