Personality Disorder: Effects of Narcissism at Work Previous studies identify the pathological differences and relationship of interpersonal dysfunctions and its effect on people diagnosed with this personality disorder (Pincus, Roche, Conroy , Hyde, & Ram, 2013). Biological factors also play an important role in the diagnosis of this disorder. Likewise, another huge factor involved in the differences between narcissists' behaviors is the type of narcissistic personality disorder the patient is diagnosed with. Depending on the type of narcissism, grandiose and vulnerable narcissism, a difference can be found, especially when it comes to situations where fear and thread are present (Besser & Priel, 2010, p. 874). Of course, other factors, situations and events are taken into consideration when this disorder occurs. However, the above-mentioned description appears to be the most prevalent in the evaluation of this disorder. To associate narcissistic personality disorder and its effects on a person's environment requires a psychological theory to understand connection and relationships in situations that may arise in relation to this disorder. These theories are social cognitive theory and contemporary interpersonal theory. By understanding these theories it can be deduced how situations and behaviors are important for understanding this type of personality pathology (Pincus, Roche, Conroy, Hyde, & Ram, 2013). Social cognitive theory states that people learn through observation. The relationship between social cognitive theory and narcissism seems to be the “by whom?” variable. Knowing the variable “from whom” people learn the relationship between social cognitive and narcissism may be… half of the paper… characteristics that make this disorder possible. On the other hand, this study seeks to find out how being a narcissist affects the narcissist himself and the environment(s) he finds himself in, such as the work environment. More than uncovering the puzzle of how narcissists can be so charming and yet so dry or apathetic, this study looks for ways that influence narcissists and colleagues in this case. Evaluating the causes of narcissism and its effects in the work environment will reduce stress in the workplace and therefore this study can serve as a guide to prevent distress in the workplace. This study could have a big impact in fast-paced work environments, especially where all employees also deal with customers. This study hypothesizes that people who score high on the narcissistic scale will be more likely to have problems when interacting with others, especially colleagues..