Related Experiment Video
Updated: Mar 23, 2026
09:49
Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
Published on: December 24, 2015
14.7K
The intersection of aggregate-level lead exposure and crime
Brian B Boutwell1, Erik J Nelson2, Brett Emo3
1School of Social Work, College for Public Health & Social Justice, Saint Louis University, 3550 Lindell Boulevard, St. Louis, MO 63103-1021, United States; Department of Epidemiology, College for Public Health & Social Justice, Saint Louis University, 3545 Lafayette Avenue, St. Louis, MO 63104-1399, United States.
Environmental Research
|April 2, 2016
Summary
Childhood lead exposure is linked to increased crime rates later in life. This study found higher blood lead levels in St. Louis census tracts correlated with more violent and non-violent criminal activity.
Area of Science:
- Environmental Health
- Criminology
- Public Health
Background:
- Childhood lead exposure is a significant public health concern.
- Previous research suggests a link between lead exposure and later-life criminal behavior.
- Understanding this association is crucial for developing targeted interventions.
Purpose of the Study:
- To investigate the association between elevated blood lead levels and crime occurrence.
- To analyze this relationship across census tracts in St. Louis, Missouri.
- To explore potential interactions between lead exposure and socioeconomic factors.
Main Methods:
- A longitudinal ecological study design was employed.
- Data on blood lead levels (n=59,645) and crime occurrence (n=90,433) were analyzed.
- Spatial statistical models were utilized to address data autocorrelation.
Main Results:
- Elevated lead exposure at the census tract level was associated with increased rates of violent, non-violent, and total crime.
- An examination of interactions between lead exposure and concentrated disadvantage showed some evidence of a negative association, though not consistently statistically significant in primary analyses.
- Supplementary models indicated a significant negative interaction, suggesting complex relationships.
Conclusions:
- Precise aggregate measurements of lead exposure provide further evidence of lead's potent predictive capability for criminal outcomes.
- Lead exposure is a significant environmental factor contributing to crime.
- Public health strategies addressing lead abatement may have positive impacts on crime reduction.
Related Concept Videos
01:25Deleterious Substances in Aggregate
670
Deleterious substances in aggregates can be detrimental to the quality and durability of concrete. These substances include organic impurities like loam, which interfere with cement hydration and are usually present in the sand. These prevent a good bond between aggregate and cement paste. Organic impurities can be detected using the colorimetric test, where the darkness of a solution after agitation indicates the level of organic content.
Another type of impurity is clay and fine material that...
Another type of impurity is clay and fine material that...
670
01:53Cause and Effect
12.7K
While variables are sometimes correlated because one does cause the other, it could also be that some other factor, a confounding variable, is actually causing the systematic movement in our variables of interest. For instance, as sales in ice cream increase, so does the overall rate of crime. Is it possible that indulging in your favorite flavor of ice cream could send you on a crime spree? Or, after committing crime do you think you might decide to treat yourself to a cone?
12.7K
01:25Strategies for Assessing and Addressing Confounding
528
Confounding is a critical issue in epidemiological studies, often leading to misleading conclusions about associations between exposures and outcomes. It occurs when the relationship between the exposure and the outcome is mixed with the effects of other factors that influence the outcome. Given that, addressing confounding is of high importance for drawing accurate inferences in research.
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
528
01:12Bonding and Strength of Aggregate
732
The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...
732
01:12Hazard Ratio
688
The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial...
For example, in a clinical trial...
688
01:27Confounding in Epidemiological Studies
968
Confounding in statistical epidemiology represents a pivotal challenge, referring to the distortion in the perceived relationship between an exposure and an outcome due to the presence of a third variable, known as a confounder. This variable is associated with both the exposure and the outcome but is not a direct link in their causal chain. Its presence can lead to erroneous interpretations of the exposure's effect, either exaggerating or underestimating the true association. This...
968