The study of criminal behavior in both the individual and within a given society.

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Does media coverage of mass shootings leads to more mass shootings the same week?

In the end of this video, Dr. Park Dietz says: Because every time we have intense saturation coverage of a mass murder, we expect to see one or two more within a week. Is this true?
22
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1answer
886 views

Does the death penalty in California cost more than $300m per execution?

In the talk show Last Week Tonight with John Oliver, John Oliver was arguing against the death penalty and showed the following image claiming that the death penalty cost more than $300m per execution ...
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3answers
2k views

Do atheists commit far fewer crimes?

According to a post by latimes.com, "How secular family values stack up": Atheists were almost absent from our prison population as of the late 1990s, comprising less than half of 1% of those ...
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0answers
217 views

Did witchcraft testing inevitably result in death by either drowning or execution?

From a speech by Australian politician David Leyonhjelm, but I've heard it elsewhere many times: The senator borrowed other stories from history in the speech, opening with details of the old ...
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0answers
70 views

Does the “chalk code” exist? [duplicate]

I came across this image recently, that claims the existence of a code known by criminals. The post does not mention the area where this code is supposedly used, but it can be inferred it pertains to ...
43
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3answers
5k views

There isn't "a single case - not one - in which it is clear that a person was executed for a crime he did not commit.”

While reading about recent evidence that casts strong doubt on whether Cameron Todd Willingham, who was executed in Texas in 2004, was actually guilty I ran across the following statement in the ...
10
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1answer
1k views

Does China have the death penalty for spammers?

Does China have the death penalty for spammers? Example claim: Welcome to the United States of Canada. Chinese law, for example, permits executions for sending spam, and harvesting of the ...
5
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1answer
244 views

Were thousands of people executed by “Breaking On the Wheel” for copying fabrics in pre-revolution France?

An article by Rick Falkvinge best categorized as political opinion / commentary on copyright enforcement claims that: A few centuries ago, the penalty for unauthorized copying was breaking on ...
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1answer
1k views

Does Islam lead to higher crime rates? [closed]

I live in a mostly atheistic country. I have often heard the claim that Muslim people commit more crimes than others, especially that they are thieves due to their religion. Is there is any truth to ...
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0answers
205 views

Does lengthening prison sentences reduce crime rates?

I have heard time and again that increasing the length of prison sentences produces little or no improvements in crime rates. It is said that increasing the probability of arrest after a crime has ...
6
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1answer
249 views

Has hypnotism been used to enhance memory?

Has hypnotism been used to enhance memory? For example if I go to my friend's house, I may forget it's details like how many steps does there have or what color was it's door! This is my conscious ...
15
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1answer
1k views

In the USA, are there more African American men in prison than in college?

I read in a book that "as the next millennium begins, there are more young black men in prison than in college." Jury Nullification by Clay S Conrad (Kindle edition, Dec 2013 loc: 343). (First ...
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1answer
358 views

Are the innocents in US prison a single digit percentage?

There is controversy on whether there are a few percents of innocent people in US jails or much less. For example according to the Innocent project Q. How many innocent people are there in ...
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2answers
735 views

Have Iceland's police only ever shot one person dead?

Is it true that Iceland's police force(s) have only shot and killed one person ever? Bloomberg reports (December 3, 2013): Icelandic police shot dead a man who refused to stop firing at them with ...
6
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1answer
386 views

Does being abused make someone more likely to be an abuser?

Does being the victim of abuse make someone more likely to commit abuse? This is sometimes called the "Vampire theory", with the analogy that being bitten turns you into a vampire. As an example, ...
13
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1answer
551 views

Has New York City's Stop and Frisk program resulted in a reduction in crime?

On August 12, 2013, Mayor Bloomberg said: Our crime strategies and tools – including Stop-Question-Frisk – have made New York City the safest big city in America. [...] As a result, ...
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0answers
265 views

Does prison work reduce recidivism?

I'm having difficulty finding statistics comparing the recidivism rates of regular prisoners and the ones that worked while serving the sentence. I can't remember where but I've read that "specialists ...
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0answers
237 views

Was there a recent spate of violence against Indians in Australia?

I recently came across a journal entry, written in December 2012, about racial violence in Australia. The entry mentioned an incident against a woman targeted for singing in French. I assume this ...
37
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1answer
5k views

Do murderers tend to return to the scene of the crime?

It is commonly heard that murderers (or other criminals) "always return to the scene of the crime". Well, that's certainly false for all murderers. However, it is suggested that murderers do have a ...
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2answers
2k views

Does increased gun ownership in the US correlate with a reduction in violent crime rates?

This is somewhat of the converse of the question Is Gun Control Effective: A quote of famous musician and gun advocate Ted Nugent has been making the rounds on the Internet again lately: Where ...
9
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1answer
873 views

Can a trained human eye catch microexpressions?

Microexpressions were validated in this question: Do involuntary "microexpressions" betray liars? But can a human eye (as opposed to a frame by frame analysis of a high-speed video) detect ...
15
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2answers
2k views

Does a dog provide a reasonable deterrent against house theft?

Is there any evidence to suggest that owning a dog or that evidence of a dog (barking alarm, beware of dog sign) reduce the likelihood of your home being broken into? Example 1: Most burglars do ...
5
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1answer
497 views

Have more people been killed in Chicago than U.S. troops in Afghanistan?

A tweet from @LeftSentThis stated that 2,000 US troops have been killed in Afghanistan since 2001, more than 5,000 people have been killed by gun fire in Chicago during that time. There are at ...
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2answers
1k views

Correlation between MAO-A gene and murderers / sex offenders

The MAO-A gene, also known as the "Warrior gene", is thought to cause increased antisocial and violent behavior patterns in people who have experienced an abusive childhood. [ref] Caspi et. al. found ...
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2answers
5k views

Does a suspect's psychological state after arrest correlate to guilt or innocence? e.g. do only the guilty sleep in jail?

A common cop procedural trope suggests only the guilty sleep in jail. It shows up in Law and Order: SVU (S6E04), award winning movies, and even articles about poker tells. The guilty, or so the ...
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1answer
12k views

Do fast jury verdicts favor either the prosecution or the defendant?

Trial watchers occasionally assert fast verdicts are more likely to be guilty ones. The idea has been expressed by small town newspapers and even sports reporters. At the same time, other news ...
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1answer
2k views

Are there between 100,000-300,000 child sex slaves in the United States today?

Ashton Kutcher and Demi Moore state this as part of the "Real Men Don't Buy Girls" campaign. CNN - There's between 100,000 and 300,000 child sex slaves in the United States today," Ashton Kutcher ...
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4answers
48k views

Can anything remove fingerprints from your fingers?

Here's where it gets interesting; I don't mean erase them from an object, I mean from your fingers directly. Some people claim there is a way to do it, some people claim it's impossible. I have a ...
13
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1answer
4k views

Do murderers have “the eyes of a killer”?

Has there been any research in criminology, psychology, or some other related field? Something that shows a correlation between the everyday facial expression someone wears on their face, and whether ...
39
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1answer
2k views

Do involuntary “microexpressions” betray liars?

I believe that it is Paul Ekman who is primarily responsible for suggesting that when people lie, their faces exhibit fleeting "microexpressions" that reveal their underlying beliefs. It would be a ...
7
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1answer
480 views

How reliable is identification via DNA matching?

For example, how did they identify Osama bin Ladin? How can they identify with such confidence a DNA match? How can you compare DNA against a sister and determine that it is indeed Osama bin Ladin? ...
20
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1answer
7k views

Did any satanic cult ever commit organised ritual murders or sacrifices?

In Manhattan Beach, CA in 1983 members of the McMartin family were accused of a variety of abuse charges against the children in their care. It was reported that the children: "were ...
12
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3answers
393 views

Can better lawyers achieve better judgements for their clients?

This claim is frequently heard in news (and especially in TV and movies). Especially in connotation with big companies and rich individuals - "They'll get the best lawyers money can buy, and they'll ...
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2answers
880 views

Does having a jury increase the chance of justice being served?

This claim popped up in a discussion on Hacker News where it was claimed that if a legal system has a jury it's more likely it will be just. As one commenter put it: [..] jury is not as easily ...
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5answers
4k views

Is gun control effective?

I have seen numerous arguments about gun control, in the sense of laws restricting gun ownership or possession, and whether widespread gun possession affects crime rates, and each side is happy to ...
24
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1answer
3k views

Are more crimes committed during a full moon?

It is a common belief that more crime is committed during a full moon. I rationalised this by assuming criminals used the increased moon light to aid them in their criminal activities with out really ...
55
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4answers
7k views

Is the death penalty an effective deterrent?

There is a lot of clutter from anti-death penalty sites, which makes it hard to find all the research. They often cite statistics like those explained in this website, including the chart below that ...
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5answers
720 views

Profiling in criminal cases

Criminal profiling is very popular in fictional crime shows, but also used in reality. A profiler uses the known data about the case to create a profile of the person that commited the crime. This ...