Multitrait-Multimethod Matrix

Question 1

Why do we consider psychological tests as trait-method units ?

Answer 1

It incorporates both true variance and method variance

Question 2

What is the Multitrait-Multimethod Matrix ?

Answer 2

It shows the correlation between tests measuring different traits, with different methods

Question 3

Name the 4 hierarchal rules of MTMM

Answer 3

1. The values in the validity diagnol should be higher than 0, and large enough to encourage further exploration of validity
2. A value in the validity diagnol must be larger than the values lying in its column and row, in the heterotrait-heteromethod triangle
3. Same as 2 but in the heterotrait-monomethod triangle
4. There should be more or less the same pattern of correlations in the different triangles

Question 4

What is a different term for reliability diagnol

Answer 4

Monotrait-monomethod values

Question 5

Name a different term for validity diagnol

Answer 5

Monotrait-heteromethod values

Question 6

What do we call the combination of the validity diagnol and the heterotrait-heteromethod triangle ?

Answer 6

Heteromethod block

Question 7

What do we call the combination of the reliability diagnol and the heterotrait-monomethod triangle ?

Answer 7

Monomethod block