Kyriazos et al (Construct validity-MTMM)

Question 1

Construct validity

Answer 1

How well a test measures the intended construct. Ongoing process.

Question 2

Multitrait-Multimethod (MTMM) Matrix

Answer 2

Method to assessconstruct validityby evaluating convergentand discriminant validityusing multiple traits and methods.

Question 3

MTMM evaluates the validity of ____ using different ___.

Answer 3

traits, methods

Question 4

Traits def

Answer 4

Hypothetical constructs (e.g. cognitive abilities).
Can be assessed with methods like self-reports or interviews.

Question 5

Four sets of correlations in MTMM

Answer 5

1. Monotrait-monomethod
2. Monotrait-heteromethod
3. Heterotrait-monomethod
4. Heterotrait-heteromethod

Question 6

Campbell and Fiske’s 4 rulesfor evaluating MTMM matrices

Answer 6

1. MONOtrait-HETEROmethod correlationsshould be statistically significant and strong.
2. HETEROtrait-HETEROmethod correlations should be weak or similar to HETEROrotrait-MONOmethod correlations.
3. HETEROtrait-MONO method correlations should be smaller than MONOotrait-HETEROmethod correlations.
4. The pattern of trait intercorrelations should be CONSISTENT across ALL blocks to ensurediscriminant validity.
   => I.e. The way DIFFERENT traits (like anxiety, self-esteem, depression) are related to each other should stayCONSISTENT whether you’re using the same method or different methods.
   -> This helps confirmdiscriminant validity, meaning the test isn’t mixing up or confusing different traits with each other.

Question 7

Trochim’s 5 guidelines

Answer 7

1. HIGHEST correlations should be with same trait (mono-mono).
2. Validity diagonal should be positive and strong. Shows convergent validity
3. Validity coefficients should be the biggest in their block -> In each group of numbers (method block), the diagonal number (comparing the same trait across methods) should be the biggest. Shows that the trait is being measured accurately.
4. Off-diagonal elements should be smaller. Proves that the test isn’t confusing different traits— key for discriminant validity.
5. Consistent relationships between traits

Question 8

Validity diagonal

Answer 8

Same trait measured with different methods