The research literature on the motivational components that influence self-regulatory learning—in conjunction with student interviews and focus groups—provided a basis for operationalizing the construct of motivation to learn science and developing the Science Motivation Questionnaire (Glynn & Koballa, 2006).
A construct is a theoretical concept about the nature of human behavior,and construct validity is the extent to which an instrument can be shown to assess the construct that it purports to measure (Gall, Gall, & Borg, 2006).
.A construct,such as motivation to learn science,is not adirectly observable variable