CTET 2 Social and Science Dec 2018 Paper

Subgoal analysis is used by Divya
Functional fixedness originated in Gestalt Psychology. It is a cognitive bias that limits a person to use an object only in the way, it is traditionally used.
Reductionism: It is the practice of analyzing and describing a complex phenomenon in terms of its simple or fundamental constituents, mainly this is said to provide a sufficient explanation.