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Related Concept Videos

Conduct Disorder01:28

Conduct Disorder

Conduct disorder is a complex mental health diagnosis characterized by a repetitive and persistent pattern of behavior that violates societal norms, the rights of others, or age-appropriate rules. The diagnostic criteria for conduct disorder require the presence of at least three problematic behaviors within the past 12 months, with at least one occurring in the past six months. These behaviors are grouped into four categories: aggression toward people and animals; destruction of property;...
Aggression01:47

Aggression

Humans engage in aggression when they seek to cause harm or pain to another person. Aggression takes two forms depending on one’s motives: hostile or instrumental. Hostile aggression is motivated by feelings of anger with intent to cause pain; a fight in a bar with a stranger is an example of hostile aggression. In contrast, instrumental aggression is motivated by achieving a goal and does not necessarily involve intent to cause pain (Berkowitz, 1993); a contract killer who murders for hire...
Bullying02:04

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.
Oppositional Defiant Disorder01:30

Oppositional Defiant Disorder

A persistent pattern of angry or irritable mood, defiant behavior, or vindictiveness characterizes Oppositional Defiant Disorder (ODD). Symptoms must occur over at least six months, involve interactions with individuals beyond siblings, and meet specific diagnostic criteria to be clinically significant. The disorder affects emotional regulation, social interactions, and behavior, often manifesting early in life and influencing long-term development and functioning.
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Group Design02:01

Group Design

The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between the two are due to...
Milgram's Obedience to Authority02:20

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.”

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Related Experiment Video

Updated: Jun 27, 2026

An Experimental Analysis of Children's Ability to Provide a False Report about a Crime
07:36

An Experimental Analysis of Children's Ability to Provide a False Report about a Crime

Published on: May 3, 2016

[The extremely violent child].

M Berger1, E Bonneville

  • 1Service de pédopsychiatrie, centre hospitalier Bellevue, CHU de Saint-Etienne, pavillon 20, 42055 Saint-Etienne cedex 02, France. maurice.berger@chu-st-etienne.fr

Archives De Pediatrie : Organe Officiel De La Societe Francaise De Pediatrie
|December 17, 2008
PubMed
Summary
This summary is machine-generated.

Extremely violent behavior in toddlers, emerging around 15-16 months, stems from underestimated early psychological traumas. This behavior is sudden, individual, and lacks guilt, indicating a specific psychological structure.

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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
09:12

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress

Published on: July 4, 2013

Area of Science:

  • Developmental psychology
  • Childhood behavioral disorders

Context:

  • Increasing prevalence of extreme toddler violence.
  • Onset around 15-16 months, coinciding with increased mobility.
  • Violence is sudden, individual, and lacks guilt.

Purpose:

  • Investigate the origins of early-onset extreme violent behavior in children.
  • Identify contributing factors and the resulting psychological structures.
  • Explore the potential for prevention strategies.

Summary:

  • Early, underestimated psychological traumas, including parental violence and distorted communication, are linked to extreme toddler violence.
  • This behavior manifests around 15-16 months, characterized by sudden, guiltless episodes.
  • A specific psychological structure develops as a result of these traumas.

Impact:

  • Highlights the critical impact of early childhood experiences on behavior.
  • Underscores the need for early identification and intervention for at-risk children.
  • Suggests current prevention methods are not feasible in certain regions, like France.