Skip to content Skip to a section
Tool·Lifes /Everything About Parenting Search apps and topics…
Apps
Explore Guides
🔧 Everyday issues

👯Sibling Rivalry

Competition for attention and resources — Judy Dunn's sibling research shows conflict is normative but manageable with fair attention and teaching repair.

Also called: Sibling conflict · Jealousy

OverviewOrigins & EvolutionWhat the science saysDaily practiceCulture & meaningGuides & thinkersMyths vs evidenceAround the world
Frequently asked questions

Media credits

Compare topics Start here

Two siblings arguing over toy
Fidelis Manyange aka manfidza · CC BY-SA 4.0
At a glance
Score intensity

Darker cells mean a higher score for this topic on that metric.

Score profile

Each bar is a 0-100 atlas score for this topic, not a timeline.

767868755570
Two axes

Both scores stay visible. Drag the slider to emphasize Evidence strength or Daily impact.

Evidence strength

Daily impact

Timeline

Milestones in order. This is history, not a weekly activity grid.

1920s Adler birth order1960s Resource dilution1970s Fairness research1980s Faber & Mazlish1990s Conflict as practice2000s Differential parenting2010 Special-needs sibs2015 Shared rooms & space2019 Digital comparison2023 Repair rituals
  1. Adler birth order
  2. Resource dilution
  3. Fairness research
  4. Faber & Mazlish
  5. Conflict as practice
  6. Differential parenting
  7. Special-needs sibs
  8. Shared rooms & space
  9. Digital comparison
  10. Repair rituals
Explore
Compare
Newborn / Infant
18 min read

Last reviewed Sources & creditsMedia creditsMethodology

Start with this section - Origins & Evolution

Quick facts

inter-sibling competition anFocus
76/100 baseEvidence
78/100 scoreDaily impact
68/100 scoreDifficulty
2–18 yearsAge span
55/100 scoreConsensus

Sibling Rivalry sits at the centre of inter-sibling competition and jealousy — a theme that developmental science, anthropology, and public health have studied across decades and continents.

Scores on this page rank evidence strength, daily-life impact, difficulty, age span, expert consensus, and urgency relative to other parenting topics in the atlas.

Research from Bowlby, Baumrind, Montessori, WHO, and UNICEF informs the sections below — always interpreted as educational context, not individual medical advice.

The profile

767868755570
  • Evidence strength76
  • Daily impact78
  • Difficulty68
  • Age span75
  • Expert consensus55
  • Urgency70

Age range

70 / 100

2–18 years

Competition for attention and resources — Judy Dunn's sibling research shows conflict is normative but manageable with fair attention and teaching repair.

Seven ways into this topic

01

Origins & Evolution

Competition for attention and resources — Judy Dunn's sibling research shows conflict is normative but manageable with fair attention and teaching repair.

Read →

 02

What the science says

Evidence on sibling rivalry from developmental science.

Read →

 03

Daily practice

Concrete steps for sibling rivalry in daily family life.

Read →

 04

Culture & meaning

How societies frame sibling rivalry across eras and media.

Read →

 05

Guides & thinkers

Researchers and practitioners who shaped thinking on sibling rivalry.

Read →

 06

Myths vs evidence

Common misconceptions about sibling rivalry checked against evidence.

Read →

 07

Around the world

Global variation in sibling rivalry norms, policy and practice.

Read →

Embed this profile

Paste this code into your blog or site — the ranking stays up to date.

Frequently asked questions

What is Sibling Rivalry?
Sibling Rivalry sits at the centre of inter-sibling competition and jealousy — a theme that developmental science, anthropology, and public health have studied across decades and continents.
How do I start with Sibling Rivalry?
Baseline week — Track current patterns related to inter-sibling competition and jealousy without changing yet — note triggers. — Use paper not guilt-inducing apps.
What is the next practice step for Sibling Rivalry?
Caregiver meeting — Agree shared language and limits across adults in the home. — Write three rules on fridge.
What does research say about Sibling Rivalry?
Attachment theory — Bowlby contributed to understanding inter-sibling competition and jealousy — cited across UK and international replication attempts.
Myth check: Sibling Rivalry myth 1
Evidence-based correction on inter-sibling competition and jealousy.
Which ages does Sibling Rivalry matter most for?
Sibling Rivalry is most relevant for 2–18 years.
How does Sibling Rivalry look around the world?
Australia — Outdoor play — Nature-based programmes emphasise risky play.

Also worth reading

Cross-category companions chosen for this topic — not more of the same shelf.

💗

Empathy

Seeing the child's inner world — parental empathy predicts secure attachment and emotion coaching success across cultures.

Evidence 88 💬

Communication

How families talk — Faber and Mazlish, Gordon, and Gottman research link communication patterns to conflict and closeness.

Evidence 90 🎲

Play & Connection

Play is the language of attachment — child-directed play builds trust, reduces behaviour problems, and teaches social rules.

Evidence 84 🤝

Co-Parenting

Raising children across households — co-parenting frameworks address communication, schedules, and conflict when parents live apart.

Evidence 68 ✅

Positive Discipline

Firm and kind limits without punishment — Jane Nelsen's Adlerian-based model teaches problem-solving over punitive control.

Evidence 85 🔁

Consistency

Same rules, same calm — behavioural science shows children learn faster when caregiver responses are predictable and aligned.

Evidence 86 🧘

Self-Regulation

Managing one's own arousal before guiding a child — parental self-regulation mediates the impact of stress on discipline quality.

Evidence 87

Wider pathways

Siblings and fit

Deep reads on this theme

Peers: the other climate that raises your childDifferent children: temperament, neurodiversity and fair expectationsPraise, pressure and conditional worthJoy as climate: why delight is protective

Situations that include this

Sibling peaceTwo kids, two climates

Collections that include this

Toddler stormTwo homesPeer world

Nearby ages & themes

😴

Sleep

Circadian development, night waking, and safe sleep environments — among the most researched and debated parenting topics globally.

Evidence 91 🍽️

Feeding

Breast, bottle, solids, and picky eating — Ellyn Satter's division of responsibility frames feeding as a relational not battlefield task.

Evidence 93 📱

Screen Time

Screens displace sleep, movement, and conversation — WHO, AAP, and UNESCO guidance converges on limits under five with quality over quantity debates.

Evidence 82 🚧

Discipline Conflicts

When limits meet resistance — discipline conflicts escalate when stress, inconsistency, or developmental mismatch go unaddressed.

Evidence 79 🎒

School Readiness

Self-regulation beats flashcards — school readiness combines executive function, language, and social entry more than early academic drilling.

Evidence 88