Related Experiment Video
Updated: Jul 23, 2026

07:36
An Experimental Analysis of Children's Ability to Provide a False Report about a Crime
Published on: May 3, 2016
Homicidal adolescents: a replication
1Department of Psychiatry, Northwestern University Medical School, Chicago, IL 60611.
Psychological Reports
|December 1, 1990
Summary
Juvenile murderers often come from violent homes and experience early aggression. Risk factors like alcohol abuse and learning difficulties contribute to violent behavior in adolescents.
Area of Science:
- Forensic Psychology
- Developmental Psychology
- Criminology
Background:
- Understanding the developmental pathways of adolescent offending is crucial for effective intervention.
- Previous research suggests a link between early life experiences and later violent behavior.
Purpose of the Study:
- To identify distinguishing factors between homicidal and nonviolent delinquent adolescents.
- To replicate and expand upon previous findings regarding the characteristics of juvenile murderers.
Main Methods:
- Matched case-control study comparing 30 homicidal and 30 nonviolent delinquents.
- Comprehensive physical, psychological, educational, psychiatric, and social examinations.
- Stepwise discriminant analysis for data evaluation.
Main Results:
- Homicidal adolescents exhibited a distinct pattern of risk factors.
- Key shared symptoms included criminally violent families, gang participation, alcohol abuse, and severe learning difficulties.
- Early childhood exposure to aggression in the family environment was a significant factor.
Conclusions:
- Juvenile murderers often learn aggression from early childhood experiences within criminally violent families.
- Cognitive and perceptual deficits, potentially linked to epilepsy or central nervous system (CNS) conditions, contribute to academic struggles.
- Adolescent risk factors such as gang involvement and alcohol abuse exacerbate pre-existing vulnerabilities.
Related Concept Videos
Replication in Prokaryotes
Overview
Replication in Eukaryotes
Overview
Milgram's Obedience to Authority
Obedience to authority is classically demonstrated in a more famous series of social psychology experiments performed by Stanley Milgram. He was a social psychology professor at Yale who was influenced by the trial of Adolf Eichmann, a Nazi war criminal. Eichmann’s defense for the atrocities he committed was that he was “just following orders.”
Bullying
A modern form of aggression is bullying. As you learn in your study of child development, socializing and playing with other children is beneficial for children’s psychological development. However, as you may have experienced as a child, not all play behavior has positive outcomes. Some children are aggressive and want to play roughly. Other children are selfish and do not want to share toys. One form of negative social interactions among children that has become a national concern is bullying.
Cognitive Development During Adolescence
During adolescence, individuals experience significant cognitive development that enhances their understanding of others' emotions and thoughts, known as cognitive empathy. This period is marked by an increased ability to adapt to others' perspectives and a more nuanced understanding of others' mental states, a skill that is foundational for social problem-solving and conflict avoidance. The development of cognitive empathy relies heavily on the theory of mind — the recognition that people have...
Revisionist Views of Adolescent and Adult Cognition
A revisionist approach to Jean Piaget's theory of cognitive development has brought new insights that challenge and reinterpret his established ideas. Piaget proposed that the formal operational stage, emerging in adolescence, represents the culmination of cognitive maturity. During this stage, individuals are said to develop abstract thinking, engage in systematic problem-solving, and show a form of egocentrism, believing others are as preoccupied with their behavior as they are themselves.

