The demarcation of science: from essentialism to constructivism;

Constructivism and Social Construction of Science;

Undoubtedly, the ideas and ways of Constructivism not only expand the study area of the S&T policy,but also switch our points of view.

Noam Chomsky and Jean Piaget separately formed the innatism and the constructionism of linguistic capacity, and their disputes presented a dialectical process of history in the development of linguistics.

They propose to replace the atomism,reductionism,objectivity,determinism and quantati tive study with holism,constructionism,deobjectification,problematicism and q ua litative study.

Social constructionism,instead,criticizes the three modernist assumptions,and has brought three transformations into psychological science:(i)from individual reason to communal rhetoric.

The construction theory of tourism sociology,which is an important domain of theory,paying attention to the construction relationship between daily life and tourism life.

The traits in development of modern c urriculum theory include multiple i n theory construction,profound and wide in theory research,diversify in theory schools,practical in th eory achievement and globalism in th eory influence,etc.

The theory construction is internal demand of field research.

Facet theory integrates theory construction,research design,variables selection,and data analysis in a systematic way.

Analysis of construction theory and its necessity for Chongqing Eco-industrial Park;