Background: Mental and psychological problems among immigrants are not a new phenomenon, but as the number of immigrants has increased in recent years, these issues have become visible to all. This study aims to determine the relationship between the psychological health, cognitive flexibility, brain-behavioral systems, and sensory processing of Iranian immigrants to Canada.

Method: This study was cross-sectional in 400 Iranian students aged 25 to 35 who attended universities in Canada and Iran. 

Results: There was a significant relationship between low registration, sensory sensitivity and sensory avoidance with anxiety in Iranian immigrant and non-immigrant students however, there was a considerable inverse connection between the behavioral activation system and sensory sensitivity. Moreover, low sensory registration, sensory sensitivity, and cognitive flexibility were identified as predictors of anxiety.

Conclusion: According to this study, there were significant relationships between sensory processing patterns, cognitive flexibility, brain-behavioral systems, and anxiety in Iranian immigrant students, and this issue may indicate the need for teaching cognitive skills strategies for immigrant students and raising awareness of their sensory needs in to reduce their anxiety. According to this study, there were significant relationships between sensory processing patterns, cognitive flexibility, brain-behavioral systems, and anxiety in Iranian immigrant students, and this issue may indicate the need for teaching cognitive skills strategies for immigrant students and raising awareness of their sensory needs in to reduce their anxiety.