Chemical composition of fingerprints for gender determination

This work investigates the chemical nature of fingerprints to ascertain whether differences in chemical composition or the existence of chemical markers can be used to determine personal traits, such as age, gender, and personal habits. This type of information could be useful for reducing the pool of potential suspects in criminal investigations when latent fingerprints are unsuitable for comparison by traditional methods. Fingertip residue that has been deposited onto a bead was extracted with a solvent such as chloroform. Samples were analyzed by gas chromatography/mass spectrometry (GC/MS). The chemical components identified include fatty acids, long chain fatty acid esters, cholesterol and squalene. The area ratios of ten selected components relative to squalene were calculated for a small preliminary experiment that showed a slight gender difference for three of these components. However, when the experiment was repeated with a larger, statistically designed experiment no significant differences between genders were detected for any of the component ratios. The multivariate Hotelling's T2 test that tested all ten-component ratios simultaneously also showed no gender differences at the 5% significance level.     

Implications of Partner Agreement of IPV for the Gender Symmetry Controversy

Because romantic partners frequently disagree on the violence in their relationship, relying on nondyadic data for perpetration and victimization rates, especially to inform the gender symmetry controversy, is problematic. In order to have a more nuanced understanding of gender symmetry, we urge researchers to be cautious when drawing symmetry conclusions from non-dyadic samples. Furthermore, using both partners, we suggest that researchers employ more qualitative approaches to ascertain IPV agreement, note times in which either partner reports IPV as an indicator of the presence of violence, and investigate the extent to which conclusions regarding gender symmetry stem from participant selection bias.     

Do Employers Prefer Workers Who Attend For‐Profit Colleges? Evidence from a Field Experiment

This paper reports results from a resume‐based field experiment designed to examine employer preferences for job applicants who attended for‐profit colleges. For‐profit colleges have seen sharp increases in enrollment in recent years despite alternatives, such as public community colleges, being much cheaper. We sent almost 9,000 fictitious resumes of young job applicants who recently completed their schooling to online job postings in six occupational categories and tracked employer callback rates. We find no evidence that employers prefer applicants with resumes listing a for‐profit college relative to those whose resumes list either a community college or no college at all.