FINGER LENGTH AND GENDER IN PAINTED HANDPRINTS:

Apparent female handprint, Pech Merle Cave, France. Image from Pinterest.

On August 5, 2009, I posted a column on Hand prints in Rock Art in which I discussed the fact that a viewer can sometimes determine the gender of a rock art creator by measuring the relative length of the first and third fingers in a hand print. Statistically more males have a longer third finger while more females have a longer first finger.

Handprint, Pech Merle Cave, France. Image from Wikipedia.

Rebecca Coffey wrote in Scientific American (2012) that “In men the index finger is usually shorter than the ring finger, but in most women it’s the other way around, although in some women the fingers are of equal length. In mice the digit ratio corresponds to the female-male hormonal balance in the womb during the week digits form; androgen apparently produces a longer ring finger. Researchers study these ratios to see if they can serve as markers for certain human attributes. So far in 2012, studies have found that girls with a masculine ratio do not get lost as easily; that a feminine ratio in heterosexual girls is associated with bulimia; and that boys with more masculine ratios have more typically masculine facial features.” (Coffee 2012:19)

Handprints, Maltravieso Cave, Spain. Internet image, public domain.

According to A’ndrea Elyse Messer (2013) of Penn State University “the assumption has been that hand prints, whether stencils – paint blown around the hand – or actual paint-dipped prints, were produced by men because other images on cave walls were often hunting scenes. The smaller handprints were assumed to be adolescent boys. Dean Snow, emeritus professor of anthropology, came across the work of John Manning, a British biologist who about 10 years ago tried to use the relationships of various hand measurements to determine not only sex, but such things as sexual preference or susceptibility to heart disease. Snow wondered if he could apply this method to the handprints left in cave sites in France and Spain. ‘Manning probably went way beyond what the data could infer, but the basic observation that men and women have differing finger ratios was interesting,’ said Snow. ‘I thought here was a neat little one off science problem that can be solved by applications of archaeological science.’” (Messer 2013) As it turns out there are numerous ancient handprints in rock art.

Handprints, El Castillo, Spain, image from donsmaps.com, photograph by  Pedro Saura.

An in-depth study of handprints in El Castillo Cave in Cantabria, Spain has provided conclusions about the genders of the makers of the handprints. “Several attempts have been made to develop a system to determine the gender of prehistoric artists with the handprints found in many caves with rock art of this chronology. One of the most prominent attempts, as mentioned above, was by Dean R. Snow. In 2006, Snow studied the hands in Les Combarelles, Font-de-Gaume and the Abri du Poisson with the result that four out of six hands belonged to women. In 2010, Snow along with other authors such as Wang used a computer image method to determine the gender of hand stencils.” (Ravazo-Rodriguez  et al., 2017:378) I find it difficult to imagine a reliable scientific result. With individual variation being such an unknown factor it would seem that the best we can do is use it to make educated guesses, which is pretty much good enough for art historians.

Enhanced handprints, Maltravieso Cave, Spain. Internet image, public domain.

However, a team in Spain determined to study this proposition and then applied the results to Paleolithic handprints found in the cave of El Castillo. “In the experiment, 77 samples (hand stencils) of western adults from the Iberian Peninsula, 46 women and 31 men, were taken. For each modern individual (22 women and 18 men), both the stencils and the real size of their hands were measured. This data was then compared with the Paleolithic stencils to determine whether there was a range of variation between the negative image and the actual hand. The measurements taken into account were the general hand length, index finger length and ring finger length. Discriminatory statistical analysis was used for the experimental work and the measurements collected in the field. In the data obtained in the experimental study, significant differences were observed in the length of male and female fingers, but not in the ring fingers themselves. Discrimina(ting) analyses show that it is the absolute finger lengths and not the ring fingers that are able to discriminate between men and women.” (Ravazo-Rodriguez  et al., 2017:1) I believe that what Ravazo-Rodriguez et al. are saying here is that a simple comparison of ring finger length is not enough, the ratio of first to third fingers must be compared. This only makes sense as we now know that hand prints in caves were made by men, women, adolescents and children so hand sizes, and this finger lengths, vary wildly.

Handprints, Cave of the Hands, Big Sur, California. Image by Esselen Institute.

The results obtained by the Spanish team were actually pretty good. “By applying this function to 21 stenciled hands in El Castillo Cave, it was found that 11 belong to women and 10 to men, indicating equal gender representation. Three of the 21 hands may be wrongly sexed according to the discriminant function. However, there is a significant difference between the real finger measurements and the measurements of their stencils in the experimental study, as the negative images overestimate the real values.” (Ravazo-Rodriguez  et al., 2017:1) With an estimation of three errors out of 21 evaluations this would have indicated a roughly 85% accuracy rate and, as I said above this is not bad in a field like art history, perhaps not good enough for a scientist, but encouraging for me.

NOTE: Some images in this posting were retrieved from the internet with a search for public domain photographs. If any of these images are not intended to be public domain, I apologize, and will happily provide the picture credits if the owner will contact me with them. For further information on this you should read the original reports at the sites listed below.

REFERENCES:

Coffey, Rebecca, 2012, Digit Divide, Scientific American, July 2012, p. 19.

Faris, Peter, 2009, Hand prints in Rock Art, 5 August 2009, RockArtBlog, https://rockartblog.blogspot.com.

Messer, A’ndrea Elyse, 2013, Women leave their handprints on the cave wall, 15 October 2013, Penn State University press release. https://www.psu.edu/news/research/story/women-leave-their-handprints-cave-wall. Accessed online 14 April 2025.

Ravazo-Rodriguez, Ana Maria et al., 2017, New data on the sexual dimorphism of the hand stencils in El Castillo Cave (Cantabria, Spain), Journal of Archaeological Science: Reports 14 (2017), 374-381.

SECONDARY REFERENCE:

Snow, D.R., 2013. Sexual dimorphism in European Upper Paleolithic cave art. Am. Antiq. 78 (4), 746–761.

Wang, James Z. et al., 2013, Determining the Sexual Identities of Prehistoric Cave Artists using Digitized Handprints, A Machine Learning Approach, Penn State University. Downloaded from Research Gate on 7 September 2025.