Procedia - Social and Behavioral Sciences 140 (2014) 98 – 102 Available online at www.sciencedirect.com 1877-0428 © 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/). Selection and peer-review under responsibility of the Organizing Committee of PSYSOC 2013. doi:10.1016/j.sbspro.2014.04.392 ScienceDirect PSYSOC 2013 The Relationship Between Behavioral & Psychological Aspects Of Design Factors And Social Interaction In Public Squares * Reihaneh Sadat Hajmirsadeghi, 2 Shuhana Shamsuddin, 3 Amir Foroughi 1 Faculty of Built Environment, University Technology Malaysia (UTM) 2 UTM Razak school of Engineering and Advanced Technology 3 Faculty of Education,University Kebangsaan Malaysia(UKM) Abstract The main purpose of this study is investigated on relationship between behavioral & psychological aspect of design factors in Public Square and social interaction among users. The specific survey method used in this study is cross-sectional survey design, the questionnaire survey in which questionnaires are used for data collection. This study addressed construct validity, the sampling method was non-probability (convenience) and data collected from 208 users of Sabze Meydan Square in Qazvin (Iran). The questionnaire includes a total of three constructs, psychological aspect, social activity type, social environment perception of public square users. In this study, for assessing the reliability of the questionnaire applied the coefficient of Cronbach alpha. The structural equation modeling (SEM) used to test of hypothesis and the finding of the research has the potential to enrich the body of knowledge among academicians as well as practitioners. The result revealed that the there is a positive relationship among behavioral & psychological aspects of design factors and social interaction in public square via users’ perception. © 2014 The Authors. Published by Elsevier Ltd. Selection and peer-review under responsibility of the Organizing Committee of PSYSOC 2013. Keywords: Public Square, behavioral & psychological aspect, Design factors, Social activity, Users' perceptions Introduction Behavioral and psychological aspects cover a humanistic approach, which is beyond the physical and geographical functionalist structure of a square. Yet the major aim of both physical and geographical issues is to provide behavioral and psychological satisfaction of the users (regarding their needs that are to be satisfied) in order to sustain success of the square (Carr, 1992). Talen (2000) argued that the doctrine of new urbanism, which seeks to * Corresponding Author: Reihaneh Sadat Hajmirsadeghi, Email: shreihaneh2@live.utm.my © 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/). Selection and peer-review under responsibility of the Organizing Committee of PSYSOC 2013.