Answer to Question 1
Construct validity exists when a measure reliably measures and truthfully represents a unique concept. It consists of several components:
(1) Face validity - refers to a scale's content logically appearing to reflect what was intended to be measured.
(2) Content validity - the degree that a measure covers the breadth of the domain of interest.
(3) Convergent validity - another way of expressing internal consistency. Highly reliable scales contain convergent validity.
(4) Criterion validity - addresses the question, Does my measure correlate with measures of similar concepts or known quantities?
(5) Discriminant validity - represents how unique or distinct is a measure.
Answer to Question 2
C
Definition of habit-formation strategy