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The convergence process and the advantages involved for less developed and developing countries, especially those located in the MENA region is of a great importance in economic studies. Through expanding regional co-operations and playing a wider role in the economies of the member states, it can prepare a suitable ground for growing regional markets and positive international economic reactions and finally can result into total development of the region. This article, using time series model is aiming at testing the convergence hypothesis in MENA region (15 countries) during 1980-2008. For analyzing time series model, we used Augmented Dicky Fuller test, Zivot & Andrews (with the endogenous time break) unit root test, Im, Pesaran & Shin and also Levin, Lin & Chu unit root panel data tests. The results of time series model with ADF and ZA tests show that there are two groups of convergence among the selected MENA countries. The first one is those countries which are converging from the low per capita income up to the average per capita income of the selected countries. The second one is the countries which are converging from the high per capita income down to the average of the region. The rest have diverged from the average per capita income during the period. According to Im, Pesaran & Shin and also Levin, Lin & Chu unit root tests, the convergence hypothesis of per capita income to average, is accepted for the whole sample. Altogether, the selected countries are minimizing the gap between their per capita income and the average per capita income of the region.

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Aims: Indigenous architecture has roots from nature, context and natural archetypes. The main goal of this research is to reframe Persian architecture as biocompatible, biophilic and eco-friendly architecture. It is to extract indicators that highlight biophilic aspects of Persian architecture as a reliable representative of the architecture of MENA region.

Methods: The research strategy is logical argumentation and the research method is descriptive-analytical. The theoretical framework of the research is based on highperformance architecture theory. The Delphi method, discipline of anticipation (DoA), and the Shannon algorithm have been adopted to extract effective indicators. For the discussion group, the opinions of twenty experts in the field are referred to. The tools for collecting opinions are in-depth interviews and structured questionnaires.

Findings: The quantitative research findings show that there is a meaningful correlation between the principles of Iranian architecture and biophilic architecture. These surveys show that the most dominant criteria might be summarized as: 1- socio-cultural dimensions: the occupant behavior, culture of context, measuring happiness instead of incomes, compatibility with the environment and the life cycle assessment; 2- economic dimensions: Persian culture of contentment, flexibility and design optimization; 3- environmental dimensions: performance-based design, carbon neutrality, and bio-compatible materials.

Conclusion: Persian architecture is an invaluable representative of highperformance architecture theory which might be acclaimed for focusing on nature-based solutions. It is to highlight the "process" more than the product; long-term benefits instead of short-term gains; nature-based value creation to encourage a zero-waste building industry, to reduce carbon footprint and biophilic architecture.