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Authors: James McBride Dabbs,Mary Godwin Dabbs

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Page 81
do more than necessary to kill their victims, like stabbing them twenty-eight times, or shooting them twice in the front and five times in the back, or killing the victim and then burning the body. Their behavior seemed especially calculated and ruthless.
We have begun to examine parole board records to see whether testosterone is related to the way in which a crime is committed. So far, we have found that higher-testosterone murderers more often know their victims and plan to kill them ahead of time. Looking at the details surrounding various crimes and examining background factors related to those crimes will help us understand more about the relationship between testosterone and crime.
Rambunctious People
It is easy to get caught up in the drama and evil of crime. Violent crime attracts our attention. But the fact is, much of the trouble in the world is caused by behavior that is not violent and people who are not criminals. The people to look out for are ordinary people, behaving in legal ways, but unruly and thoughtless in their treatment of others. Not only strangers, but our relatives, neighbors, and associates can injure us, cause us economic hardship, and disrupt our lives in numerous ways. Everybody knows about reckless drivers, careless smokers, and negligent baby-sitters and the problems they cause for themselves and other people. As with criminals, some of the misbehavior of these people is related to testosterone.
I think "rambunctious" is a word that describes nonviolent trouble-makers well. Rambunctious means boisterous and disorderly. It has generally humorous connotations, but the
American Heritage Dictionary
includes a serious meaning, as in the sentence "Jackson's subordinates did not need whiskey to become rambunctious."
9
Many high-testosterone people I have studied are like Jackson's subordinates. Whiskey, of course, would make them worse.
The largest rambunctious group we studied came from the military. Twenty years after the Vietnam war, the Veterans Administration decided to reexamine the Vietnam military experience. It wanted to find out how the war affected soldiers and whether the chemical Agent Orange, which had been used to clear the jungle for fighting, had dam-
 
Page 82
aged their health. There were 4,462 men in the study, some who had served in Vietnam and some who had served elsewhere. The men underwent medical examinations, which included testosterone measures, and they answered questions about their military experience, background, family, and work. After the study was completed, the Veterans Administration made the data available to people like me, who wanted to explore other questions. Psychologist Robin Morris and I used this set of data to examine relationships between testosterone and behavior.
10
We did a "risk ratio" analysis among the veterans, first by dividing the men into two groups. One group included the 10 percent who were highest in testosterone, which we called the high-testosterone group. The other group included everyone else, and we called this the normal-testosterone group. We then computed the likelihood of members of each group engaging in particular activities. We found that high-testosterone men had been more likely to misbehave in school as children, get into trouble with the law as adults, use drugs and alcohol, go AWOL in the Army, and report having ten or more sex partners in one year. Table 4.1 shows what we found. On the right side of the table are risk ratios, which show the relative risk of various behaviors among high- versus normal-testosterone men. For example, a risk ratio of 1.5 would mean that the behavior was one and a half times as likely in high-testosterone men as in normal-testosterone men. The average risk ratio for all of these activities was 2.0.
Table 4.1.
Men's delinquency. Numbers show percent of normal- and high-testosterone men engaging in the different misbehaviors.
T
ESTOSTERONE
Risk Ratio
Normal
High
Childhood delinquency
12
18
1.5
Adult delinquency
10
23
2.3
Hard drug use
10
25
2.5
Marijuana use
22
48
2.2
Alcohol abuse
12
16
1.3
Military AWOL
6
13
2.2
Many sex partners
23
32
1.8
 
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Soldiers are not the only people who engage in "combat." At any street corner or community gathering there are likely to be a few rough characters, and some of these people belong to what we call the counterculture. They reject the mainstream values of society, and they stand out in dress, manner, hairstyle, body decoration, and behavior. They are different enough to make others feel threatened and uncomfortable.
Terry Banks was an undergraduate honors student who had friends and acquaintances in the counterculture. She wanted to know whether testosterone might explain some of their behavior. We compared twenty-nine delinquent acquaintances of hers (sixteen men and thirteen women) with thirty-six college students of similar age. All the delinquents used drugs and listened to grunge music, and some were former skinheads; several of the men were musicians, and several of the women were strippers. Everyone in the group had a strong dislike for authority, which made them likely to encounter problems with the police. Nineteen of the twenty-nine had body art, tattoos, or piercings other than for earrings. Twenty-four had used a weapon on someone, twenty-five had been in fights in the last year, twelve had been arrested, and four had served prison time. Two had killed someone, and a third had shot someone and thought he might have killed him, but had not stayed around long enough to see whether the person had died. We analyzed spit samples from these people and found that the delinquent group, including both men and women, was higher in testosterone than the college student group. Banks took photographs of all her subjects. Their expressions were friendlyafter all, she was their friendbut along with their smiles came skull, snake, and dagger tattoos, striking hairstyles, and flamboyant attire, including Ted Bundy T-shirts.
11
Trying to find people who were a little tamer than Banks's friends, but still rambunctious, we examined college fraternities.
12
A popular image of fraternities includes young men partying, drinking, smoking, and chasing women. Usually the image does not include young men studying, but fraternities are a mixed bunch and a good place to get testosterone scores from groups that show a wide range of behavior. Two of my student assistants, Marian Hargrove and Colleen Heusel, collected saliva samples from twelve fraternities on two southeastern university campuses. Hargrove collected samples at one university, and Heusel collected at the other. One or the other visited each fraternity
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