This presentation begins with two basic assumptions 1. That our entire life is tied to the interdependence of our behaviors and choices, within the context of a negotiation 2. That we can study different concepts in order to draw conclusions about other issues, for example, from the width of a tree's ring we can obtain information about the history of the climate, from the measurement of GDP we can conclude about the quality of life of a country's inhabitants Based on these assumptions, we examine behaviors, ways of influencing behaviors, ways of making decisions, cognition and cognitive perception, all within the context of negotiation. Negotiation is the process of making joint decisions when the parties involved have different preferences - Negotiation is a way to reach an agreement Negotiation covers our entire life from the smallest (e.g. a baby crying) to the largest (the UN, etc.) win - win - win” model papakonstantinidis ” is a mathematical model of interdependencies that extends the “win-win” of a negotiation to embrace the entire community (the third win ), thus allowing the Community to benefit from any negotiation between two trading parties. For example, any energy agreement between two states must take into account the benefit of all others on a planetary level. Chronologically, negotiation went through the phases of (win-lose/ zero sum ( Distributive Negotiation) 40s in win-win (Unification Negotiation) -1950s and win-win-win ( Integrated or Socialized Negotiation) 2002 This is a strategic-social-ethical framework of reference, corresponding to the "environment-society-administration" triangle. The model has applications in fields such as Sociology, Economics, Business Administration, Architecture, Computer Science, Environmental Science, Tourism, Education, Grassroots Movement Science, Local Development, and generally, anywhere else where we need to make a combined decision/choice. Decision making is considered as the cognitive process that results in the selection of a belief or course of action among many possible alternatives.