The relationship between testosterone and aggression: a meta-analysis

In non-human animals, the relationship between testosterone and aggression is well established. In humans, the relationship is more controversial. To clarify the relationship, Archer conducted three meta-analyses and found a weak, positive relationship between testosterone and aggression. Unfortunately, each of the analyses included only five to six studies. The aim of the present study was to re-examine the relationship between testosterone and aggression with a larger sample of studies. The present analyses are based on 45 independent studies (N=9760) with 54 independent effect sizes. Only studies that reported a p-value or effect size were included in the analyses and the sample may underestimate the proportion of non-significant findings in the population. Correlations ranged from −0.28 to 0.71. The mean weighted correlation (r=0.14) corroborates Archer's finding of a weak positive relationship.     

Teacher pilgrims at World Youth Day: a preliminary examination

ABSTRACT

This paper examines the experiences of six teachers from a regional, Australian diocese who attended World Youth Day (WYD). It also reports on aspects of their worldview and their experience working in Catholic schools. Overall participants were very positive about working in Catholic schools, and though not connected in an ongoing way with parish communities, they were happy to support the religious dimension of Catholic schools and were often involved in parish-based programmes when there was a connection with school activities. Their worldview could be characterised as having much in common with dominant cultural paradigms that sees religion in moral terms along with a deistic sense of God. Established social networks supported them in these views. Teacher pilgrims reported that WYD gave them the opportunity to experience a broader, more diverse Catholicism as well as the experience of going overseas and being part of a large gathering. Participation in WYD may open up opportunities for reflective discernment on the part of teacher pilgrims and a result has implications for the formation of teachers working in Catholic schools.     

Would a neuroscience of violence aid in understanding legal culpability?

Defense attorneys in criminal cases are beginning to argue that their clients were biologically predisposed to committing their crimes and therefore were less responsible for their behavior. Indeed, if our brains cause our behavior, and our brains are the way they are because of genetic composition, insults, disease, and life experiences, it becomes difficult to argue that any punishment as justified retribution for behavior is cogent. In this essay, I address the question of whether understanding the neuroscience behind human behavior should alter our legal notion of responsibility. We will examine this query in greater detail, using violence as a case study, asking whether understanding the neuroscience underlying violent behavior impacts our notion of personal or legal culpability. I shall argue that it does not. I proceed by first briefly sketching what we know about human violence and the biology behind it. Then I turn to a quick discussion of psychopaths, their connections to violence, and what we think we know about the biology of their brains. Finally, I come to the question of whether we should consider violent people with specific brain abnormalities as mad or bad, which will feed into the question of whether such people are responsible for their criminal behavior. I conclude with some very general and very brief speculations on what this discussion has to tell us about nature of being human.