The analysis only focused on those who self-declared as being either Black or White. What they found was that Black participants had an average penis length of cm ( inches), while White participants had an average penis length of cm ( inches). The models ranged from 10– cm (4– in) in length and 5– cm (–7 in) in circumference. The choices varied according to the nature of the relationship that participants were considering.
In general, the average penis length is slightly longer in black or African American men compared to other ethnic or racial groups. The average length in this group is cm, but by comparison, the average white or Caucasian penis size is only a quarter of a centimeter smaller, at cm. Many of the adult movies with Black men in starring roles use racial themes in the title and often as the flick's primary selling point. Titles such as "Big Black Dicks, Little White Chicks," and 'There´s a Black Man in My Wife´s Ass," are a microcosm of the porn industry´s perpetuation of Black male sexual stereotypes.
An adult penis with an erect length of less than 7 cm or inches but otherwise formed normally is referred to in a medical context as having the micropenis condition. The condition affects % of men. Some of the identifiable causes are deficiency of pituitary growth hormone or gonadotropins, mild degrees of androgen insensitivity, a variety of genetic syndromes and . According to one study published in the British Journal of Urology International (BJUI), the average length of a flaccid penis is inches, while the average length of an erect penis .