Energies 2015,8 11011 open in the winter on a specific day and therefore wasted a specific quantity of energy.What is most promising about such studies is that since they provide feedback to individual occupants by collecting data at the level of individual occupants,there is a potential for these studies to investigate how occupants with different energy behavior characteristics adopt energy-saving behaviors.In addition,these studies also can help researchers find extremists within a built environment and can reveal how extremists influence their peers. Table 1 provides a summary of presented feedback techniques employed in commercial buildings. This summary shows that most researchers provide weekly feedback to occupants.In addition,the logical length for feedback studies seems to be between two to four months.Furthermore,as mentioned, these studies indicate that occupants typically control less than 10 percent of total energy use in commercial buildings [148,149]-Table 1 shows that feedback research has led to energy savings of less than 10 percent,which could confirm that occupants control less than 10 percent of overall energy consumption. Table 1.Summary of feedback techniques Feedback features References Individual [46,145] Type Comparative [68,123,147 Weekly [45,123,145,147 Frequency Biweekly [68] Monthly [132] Less than 2 Months [123,145] Duration 2-4 Months [45,68,132,147 More than 4 Months [46] Energy saving Less than 10 percent [45,46,68,123,132,145,147] More than 10 percent NA 5.Discussion and Future Research Prospects The recent evaluations of occupancy-related energy-use behaviors have grown in importance,and an increasing portion of research has focused on the variety of methods and techniques used to evaluate this topic in commercial buildings.In the previous sections,we have discussed exciting literature and have highlighted the main limitations of these works.The following sub-sections will discuss the overall challenges of the current literature to point out important research directions for future studies.We will first go through individual approaches and then argues connection between these approaches. 5.1.Overview of Current Approaches Despite the attention given to the topic,there are still various limitations and issues that should to be addressed by future studies.The first point that the current literature failed to consider is the effect of ambient temperature and humidity on occupant behavior in commercial buildings.Occupancy energy-use behavior varies according to weather conditions [73,150].Individual occupant's behaviors may have a larger impact on energy consumption in hot-dry climates than in mild-humid ones [8]. For instance,Paatero and Lund has shown that in sub-tropical countries,occupant energy behaviors areEnergies 2015, 8 11011 open in the winter on a specific day and therefore wasted a specific quantity of energy. What is most promising about such studies is that since they provide feedback to individual occupants by collecting data at the level of individual occupants, there is a potential for these studies to investigate how occupants with different energy behavior characteristics adopt energy-saving behaviors. In addition, these studies also can help researchers find extremists within a built environment and can reveal how extremists influence their peers. Table 1 provides a summary of presented feedback techniques employed in commercial buildings. This summary shows that most researchers provide weekly feedback to occupants. In addition, the logical length for feedback studies seems to be between two to four months. Furthermore, as mentioned, these studies indicate that occupants typically control less than 10 percent of total energy use in commercial buildings [148,149]—Table 1 shows that feedback research has led to energy savings of less than 10 percent, which could confirm that occupants control less than 10 percent of overall energy consumption. Table 1. Summary of feedback techniques. Feedback features References Type Individual [46,145] Comparative [68,123,147] Frequency Weekly [45,123,145,147] Biweekly [68] Monthly [132] Duration Less than 2 Months [123,145] 2–4 Months [45,68,132,147] More than 4 Months [46] Energy saving Less than 10 percent [45,46,68,123,132,145,147] More than 10 percent NA 5. Discussion and Future Research Prospects The recent evaluations of occupancy-related energy-use behaviors have grown in importance, and an increasing portion of research has focused on the variety of methods and techniques used to evaluate this topic in commercial buildings. In the previous sections, we have discussed exciting literature and have highlighted the main limitations of these works. The following sub-sections will discuss the overall challenges of the current literature to point out important research directions for future studies. We will first go through individual approaches and then argues connection between these approaches. 5.1. Overview of Current Approaches Despite the attention given to the topic, there are still various limitations and issues that should to be addressed by future studies. The first point that the current literature failed to consider is the effect of ambient temperature and humidity on occupant behavior in commercial buildings. Occupancy energy-use behavior varies according to weather conditions [73,150]. Individual occupant’s behaviors may have a larger impact on energy consumption in hot-dry climates than in mild-humid ones [8]. For instance, Paatero and Lund has shown that in sub-tropical countries, occupant energy behaviors are