According to Dabbs (1987), what was found regarding testosterone levels in male prisoners?

Testosterone has long been studied for its potential link to aggression and criminal behavior. In Dabbs' research from 1987, the findings indicated that male prisoners involved in violent crimes exhibited higher levels of testosterone compared to their non-violent counterparts. This suggests a correlation between elevated testosterone levels and aggressive behavior which aligns with the biological psychology principle that hormones can influence behavior.

The connection here stems from the understanding that testosterone is often associated with increased aggression, competitiveness, and risk-taking behaviors. Studies have shown that higher testosterone levels can lead to a greater propensity for violence, which is reflected in the higher levels observed in those committing violent offenses.

Understanding this correlation helps to highlight the significant role that biological factors, such as hormones, play in influencing behavior and criminal activity. This reinforces the viewpoint in biological psychology that biological underpinnings can significantly inform our understanding of psychological phenomena, including criminality.