Prof. Bernard Wallner
 
Educational Background:
Behavioral Endocrinology
 
Research and/or Professional Experience:
Stress Research stress perception and the effects on reproductive physiology in relation to hierarchies and socioeconomic status, respectively social dominance in humans and various animal models (e.g., macaques, chimpanzees, and guinea pigs) Primatology Behavioral, physiological, and morphological aspects of female secondary sex characters in monkeys Morphometric analyses of perineal swelling expression Humans Organizational behavior. Evolutionary aspects of behavior in the working process Human Reproduction. The skewed distribution of the sex ratio at birth (SRB)

This work presents a relationship between environmental conditions and reproductive performance in modern humans. Birth rates and sex ratio (SRB) at birth were analyzed from large data scales. The results include data from people working or living under different job respectively socio-economic conditions, such as employees working in the academic field, employees under supervisory or hire and fire conditions, and people who have better access to resources. The results show that employees who have better jobs and earn more money do have more children and females under better socio-economic conditions do give birth to more sons. In conclusion, it is suggested that different socio-economic environmental conditions may have an impact on female and male birth rates and SRBs, which may be related to stress perception rates.