Uploaded May 2022 | Updated September 2026, 2 weeks ago

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Most people have a sibling — in fact, children in the U.S. today are more likely to grow up with a brother or sister than with a father. While a lot of social scientists research the impact of schools and parenting, little attention is given to a relationship that might be even more consequential. To understand just how important our relationship with our siblings are, let’s remind ourselves of the tragic story of the two most famous brothers in Western history.

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COLLABORATORS
Script: Jonas Koblin
Artist: Pascal Gaggelli
Voice: Matt Abbott
Coloring: Nalin
Editing: Peera Lertsukittipongsa
Fact-Checking: Ludovico Saint Amour di Chanaz
Production: Selina Bador, Morgan Lizop
Fact-checking: Ludovico Saint Amour di Chanaz
Proofreading: Susan
Sound Design: Miguel Ojeda

SOUNDTRACKS
Toys Are Alive - Studio Le Bus
Nice Toys - Studio Le Bus
Terror Avenue - Jace Pierce
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If you have children who could use some help in learning to get along, consider participating in this educational program
Adler's research mostly resisted the test of time with modern science techniques showing that his theories were quite accurate. The main one being that order of birth impacts the most children's personalities. This interacts also with gender. One huge limitation of adlerian theories was that he performed his research only on caucasian english and north american children which means that his research could not be generalized to other ethnicities and populations and cultures. However recent research is trying to do this and apparently although the effects are slightly different across cultures there is always a difference in behavior that is correlated with order of birth. Read more about Adler's Research

SOURCES
Individual psychology, Alfred Adler, Wikipedia en.wikipedia.org/wiki/Individual_psychology

Sibling influence on children’s objectively measured physical activity: a meta-analysis and systematic review bmjopensem.bmj.com/content/4/1/e000405

Sibling relationship quality and psychopathology of children and adolescents: A meta-analysis researchgate.net/publication/233536695_Sibling_relationship_quality_and_psychopathology_of_children_and_adolescents_A_meta-analysis

Birth order - an overview based on big population data
nber.org/reporter/2017number4/new-evidence-impacts-birth-order

CLASSROOM EXERCISE
Get your students to research famous people and find out what happened to their siblings. What were their lives like? And which one would your students rather be? How would your students feel if they had a famous sibling?

CHAPTERS
00:00 Intro to siblings dynamics
00:40 The first famous brothers
02:41 Adler’s theory
03:54 6 Facts of siblings
05:51 Adler’s advice
06:14 Sprouts Avatar
06:23 Patrons’ credit
06:32 Ending