Question

Discuss two types of validity

Include information on how you calulat

them how they are used to develop test

how we evaluate test based on them?

Answer 1

Construct validity refers to the extent to which a study or test measures the concept which it claims to.

There are two types of construct validity:

1) Convergent validity:

Convergent validity refers to the extent to which the constructs that are tested relate with each other.

2) Discriminate validity:

Discriminate validity refers to the extent to which the constructs tested which don’t have a relationship do indeed not have a relationship with one another.

Statistical conclusion validity refers to the extent to which we can the results are statistically significant, that is, we can establish cause and effect above chance.

Typically in psychological studies chance is established at 5% or 0.05 of chance. This means that if the results are above 5% then we will accept our alternative hypothesis and reject our null hypothesis. This suggests cause and effect between the variables. If the results are below 5% then we will accept our null hypothesis. Having result below 5% of chance means we cannot establish cause and effect because the results have occurred by chance.