There is always a set of some specific assumptions and suppositions on which the discipline of instructional design is based. Jonassen, Tessmer and Hannum (1999) found that there exist some specific scientific principles which are there for the foundation of the discipline of instructional design and these principles are verified by the empirical data.
I do believe that instructional design is aligned with science in a sense that instructional design is the science of developing such specifications in detail for the purpose of creating, implementing, analyzing, and evaluating such sort of situations whose main task is to facilitate learning of not only large but also small units of subject matters regardless of the level of complexities related to the subject matters. After evaluation, it also helps in the maintenance of the situations. Also we can say that instructional design is a science based technology which is based on the specific assumptions related to the real world. Instructions which are based on scientific principles could be more effective. This science based technology not only involves the identification of the variables but also it identifies the potential relationships that exist between those variables. So, we can say that instructional design has got alignment with the field of science.
To describe instructional design as a technology, we can say that it is not only methodical but also systemic application of such techniques and strategies which are derived from the theories including behavioral, cognitive and constructive theories. And the purpose of the derivation is to apply the strategies and techniques to the solutions of various instructional problems.
Rogers (2002) found that instruction design as a technology is the combination of instructional design and instructional development. We can also say that as a technology,