While many personality traits, such as extroversion, are innate, most researchers believe that type a personality characteristics are more of a reaction to environmental factors, or tendencies toward certain behaviors, and are influenced by culture and job structure. This belief came about thanks to the work of blood type humanics pioneer masahiko nomi in the 1970s. What follows is a quick rundown of each blood type and the purported characteristics for each. web exclusive experts from bournemouth-based real crime magazine partnered with the centre for applied criminology at birmingham city university to reveal the five key traits. whether youre a secretor or a non-secretor is completely independent of your blood type, but just as important when it comes to understanding any metabolic dysfunctions and immune susceptibilities. Simply put, a secretor is a person whose body secretes its blood type antigens into its fluids saliva, mucus, etc. Enneagram fours have the motivational need to express their uniqueness and be authentic. Fours value individualism and as a result, feelings, self-expression and purpose will be important to them. They are quite romantic at heart and appreciate beauty and creating meaning for themselves and for others. Personality psychology is a branch of psychology that studies personality and its variation among individuals. It is a scientific study which aims to show how people are individually different due to psychological forces. Haematophilia sexual attraction involving blood (either on a sex partnerattractive person or the liquid itself not to be confused with haemophilia, a genetic disorder of the blood) harpaxophilia sexual arousal from being the victim of a robbery or burglary hematolagnia sexual attraction to blood hybristophilia sexual arousal to people who. unconventional sensual, erotic, and sexual behaviors (herein referred to as kink behaviors) investigated by academia are based largely on clinical and criminal cases, and most published, peer-reviewed, quantitative research on these behaviors is based almost exclusively on male participants. For this study, information was collected and analyzed from 1580 female participants recruited from the. Today, there is no shortage of personality type theories, and our pages on personality types and tests are among the most popular pages on this site. This article is about one of the oldest personality type systems in the world the four temperaments model.