If so, why? These questions were developed by social scientists and studied, concluding that body language is balanced in two different phases “high power and low power”. The inference of the experiment was that male students appeared to have a “higher” sense of power and female students experienced a “lower” sense of power. Scientists have found that this is associated with testosterone and cortisol levels, leaders are individuals who have been tested to have high levels of testosterone and low levels of cortisol, and vice versa. Another experiment was conducted by the Department of Education, Stockholm University, Sweden; determine the body language of blind adults. After interviewing five congenitally blind people, two adventitious blind people and two sighted blind people, the university researchers came to a conclusion. Fourteen hours of videotaped interviews were studied and evaluated, resulting in a typology of 19 different forms of bodily expressions. Typology is an analytical tool used to interpret the different bodily expressions of blind and slightly blind individuals. Each person expresses, for example, different spontaneous moods using the body and a personal body style (idiosyncratic expressions). All people also expressed themselves in a functional and concrete way, as indicated by the strong presence of instrumental expressions, isomorphic representations and indications.