Anthropologist Dean Snow of Penn State has determined that handprints left on cave walls were mostly female. It had been assumed that they were mostly male since images on the walls typicallydepict hunting scenes. However, Snow used five different measurements to identify the female prints, first separating out the clearly adult male hands. Then comparing the ratios of the index finger to the ring finger and the index to the pinky to separate the women from the adolescent males. Step one determined that 10% of handprints left on Spanish and French cave walls were adult men. The second step found that only 15% were made my adolescent males, which means 75% were made by women.