The concept of encouraging entrepreneurial activities is considered as a priority of many nations. The aim of this research is to evaluate influential factors on entrepreneurship and assess their current status based on systems thinking. Firstly, A conceptual model was formed based on three dimensions (subsystems) including: Economic, political-legal and cultural. The next step was to test a model in the Iranian context. A case of Pardis Science and Technology Park (PSTP) in Tehran was selected and questionnaire was distributed among 105 people. A lisrel software was utilized for computing a degree of impact. Also 8 semi-structured interviews were conducted and analyzed with Vensim software in order to complete a system and evaluate a current situation. Results of study determined most influential factors on entrepreneurship activities and also indicate that many weaknesses exist in the current situation of entrepreneurship in Iran. Suggestions for improving current situation were also mentioned.

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