Here are some studies from the last time this was discussed on here.
Testosterone, crime, and prison behavior were examined among 692 adult male prison inmates. Inmates who had committed personal crimes of sex and violence had higher testosterone levels than inmates who had committed property crimes of burglary, theft, and drugs.
www.sciencedirect.com/science/article/abs/pii/019188699400177T
Data analyses revealed that, compared with placebo, testosterone increased reactivity of the amygdala, hypothalamus and periaqueductal grey when viewing angry facial expressions.
We were able to show for the first time that increasing levels of testosterone within the normal physiological range can have a profound effect on brain circuits that are involved in threat-processing and human aggression," said Carré, Assistant Professor at Nipissing University.
www.sciencedaily.com/releases/2014/08/140811124630.htm
This is consistent with other studies, which show that among men known for their aggressive behavior, testosterone has a clear effect in provoking hostility and violence, an effect that has also been documented in women.
www.google.com/amp/s/nypost.com/2019/01/16/the-scientific-reasons-why-men-are-more-violent-than-women/amp/
Atavistic residues of aggressive behavior prevailing in animal life, determined by testosterone, remain attenuated in man and suppressed through familial and social inhibitions.
Testosterone plays a significant role in the arousal of these behavioral manifestations in the brain centers involved in aggression and on the development of the muscular system that enables their realization. There is evidence that testosterone levels are higher in individuals with aggressive behavior, such as prisoners who have committed violent crimes.
www.ncbi.nlm.nih.gov/pmc/articles/PMC3693622/#:~:text=There%20is%20evidence%20that%20testosterone,aggressive%20phases%20of%20sports%20games.
This study found that inmates with higher testosterone concentrations had more often been convicted of violent crimes. The relationship was most striking at the extremes of the testosterone distribution, where 9 out of 11 inmates with the lowest testosterone concentrations had committed nonviolent crimes, and 10 out of 11 inmates with the highest testosterone concentrations had committed violent crimes.
www.ojp.gov/ncjrs/virtual-library/abstracts/saliva-testosterone-and-criminal-violence-young-adult-prison
In a wide range of vertebrate species, there is a clear relationship between a male’s aggressiveness and his circulating levels of androgens such as testosterone, a hormone produced in the testes.
www.britannica.com/science/aggressive-behaviour/The-influence-of-testosterone
Testosterone shows the same small, positive relationship with aggression in women as in men. The role of cortisol is unclear, although some evidence suggests that women who are high in testosterone and low in cortisol show heightened aggression.
www.frontiersin.org/articles/10.3389/fnbeh.2018.00081/full
Hormones are also important in creating aggression. Most important in this regard is the male sex hormone testosterone, which is associated with increased aggression in both animals and in humans. Research conducted on a variety of animals has found a strong correlation between levels of testosterone and aggression. This relationship seems to be weaker among humans than among animals, yet it is still significant.
opentextbc.ca/socialpsychology/chapter/the-biological-and-emotional-causes-of-aggression/
In men, high levels of endogenous testosterone (T) seem to encourage behavior apparently intended to dominate to enhance one's status over other people. Sometimes dominant behavior is aggressive, its apparent intent being to inflict harm on another person. Measurement of T at a single point in time, presumably indicative of a man's basal T level, predicts many of these dominant or antisocial behaviors."
web-archive.southampton.ac.uk/cogprints.org/663/1/bbs_mazur.html
Prior studies have found higher levels of testosterone among persons who commit violent crimes than among those who commit nonviolent crimes. The present study examined data from 230 male prison inmates to determine how testosterone levels might relate specifically to the way in which inmates committed their crimes. Characteristics of inmate behavior associated with murder, manslaughter, robbery, assault, rape, and child molestation were scored from parole board investigative reports, and inmate testosterone levels were assayed from saliva samples. Among inmates who committed homicide, those high in testosterone more often knew their victims and planned their crimes ahead of time.
www.researchgate.net/publication/223531794_Testosterone_and_ruthless_homicide