<p><p> This study examines the relationship between personality style of managers and their effectiveness in the credit and </p> <div>financial institution of SamenAlhojaj of Sabzevar city. This study issued the fundamental question whether personality </div> <div>styles of managers has positive effect on the effectiveness of the activities or not and provide assumptions based on </div> <div>whether is there significant relationship between the character style of the managers (personality traits and types) and their effectiveness or not, </div> <div>it has been tried to identify the effective factors on effectiveness of the managers.</div> <div>Identifying and determining the effectiveness of the managers of a credit and financial institution of SamenAlhojajSabzevar city is the main </div> <div>objective of the study which include the secondary objectives such as determining the relationship between personality types and effectiveness </div> <div>of the managers of a credit and financial institution of SamenAlhojajSabzevar city and help to enrich the institutions internal projects. This </div> <div>study uses a descriptive kind of research method and the field survey and the correlationand its objective is applicable.The first step examines </div> <div>the reports and documents and the second step distribute two types of questionnaires among the type view Myers – Briggs, and effectiveness </div> <div>of the questionnaire specifies through inferential statistics and correlation test. The results showed the managers’ character depend to their </div> <div>mental health; therefore, it is suggested to hold administrative regular meetings to resolve workplace problems and consultations to identify </div> <div>psychological possible problems between managers and staff.</div> <div>The population of the research involves all the employees of credit and financial institutions SamenAlhojaj, which 50 person of them were selected </div> <div>as sample. It is worth noting that two questionnaires of type view Myers – Briggs to detect four dimensions of personality and an effectiveness </div> <div>questionnaire to determine the treatment feature of effectiveness managers was used in the research.</div></p>