Over the last forty years, studies have continued to demonstrate that assertiveness ability is strongly linked to: 

• Enhanced immune systems                             
• Reduction of illness and injury                      
• Increased self-esteem                          
• Strengthened sense of personal identity                     
• Improved job satisfaction                                
• Reduced anger and hostility  
• Lowered levels of stress & tension                 
• More fulfilling relationships                          
• Less marital discord                            
• Improvement in phobic & anxiety conditions          
• Lowered depression levels                              
• Increased effectiveness in the treatment of substance abuse and eating disorders