Agresividad con pares en preescolares (pegar, morder, empujar)

Contexto

La agresión física pico en la primera infancia (24-42 meses) y declina durante la edad preescolar a medida que se desarrollan lenguaje y autorregulación. Solo ~5% sigue una trayectoria crónica de alta agresión. Factores de riesgo: parentalidad dura, modelos agresivos, déficits de función ejecutiva, adversidad familiar.

Lo que dice la evidencia

1. [claim-aggression-decline]social-developmentEvidencia alta

   Physical aggression peaks in toddlerhood and declines through preschool for most children; only a small chronic-high trajectory predicts later antisocial outcomes.

   → Para ~95% de los niños, la agresión física declina hacia los 5 años; es normativa, no patológica.

   Matices: Indirect/relational aggression emerges later and shows different correlate profile.

2. [claim-aggression-peaks-toddler]social-developmentEvidencia alta

   Physical aggression (hitting, biting, kicking) peaks between 24 and 42 months in typical development, then declines as language and self-regulation develop. Toddler hitting/biting is normative, not a sign of pathology, and is mostly outgrown by school age.

   → El pico es a los 2-3 años; persistencia más allá de esto requiere atención.

   Matices: A small subgroup (~5-10%) on chronic-high trajectory shows persistent aggression; risk factors include family adversity, harsh parenting, low maternal education.

3. [claim-emotion-coaching]emotion-regulationEvidencia alta

   Parental emotion coaching (acknowledging, labeling, and helping problem-solve children's emotions) predicts better child emotion regulation, peer competence, and physiological self-regulation; emotion-dismissing styles predict worse outcomes.

   → Etiquetar emociones y enseñar alternativas verbales reduce agresión.

   Matices: Largely correlational; child temperament moderates effects.

4. [claim-corporal-punishment-harm]disciplineEvidencia alta

   Spanking is associated with increased child aggression, antisocial behavior, externalizing and internalizing problems, and impaired parent-child relationships; effect sizes are similar in direction (and magnitude per study) to those for physical abuse.

   → Pegar al niño que pegó aumenta su agresión.

   Matices: Largely observational; some methodological critiques (e.g., Larzelere) argue for distinguishing 'conditional spanking' but mainstream consensus and AAP oppose any corporal punishment.

5. [claim-pcit-tripleP-effective]disciplineEvidencia alta

   Behavioral parent-training programs (PCIT, Triple P, Incredible Years) produce moderate, durable reductions in toddler/preschool disruptive behavior and improvements in parenting quality.

   → Programas de entrenamiento parental reducen conducta disruptiva.

   Matices: Many efficacy trials conducted by program developers; effectiveness in routine settings somewhat smaller.

Qué hacer

• ✓

  Detener el acto físicamente con calma y enunciar la regla ('no pegamos; eso duele')

  [claim-emotion-coaching]

• ✓

  Validar la emoción y ofrecer alternativa ('estás muy enojado; podés decir BASTA o pedirme ayuda')

  [claim-emotion-coaching]

• ✓

  Atender al niño herido primero; eso modela empatía

  [claim-inductive-discipline]

• ✓

  Usar disciplina inductiva: explicar el efecto en el otro ('mirá su cara; le dolió')

  [claim-inductive-discipline]

• ✓

  Reforzar conductas prosociales con atención y elogio descriptivo

  [claim-process-praise]

• ✓

  Time-out breve para conductas reiteradas o severas, dentro de relación cálida

  [claim-timeout-effective]

• ✓

  Asegurar sueño, juego activo y reducir gatillos (hambre, sobreestimulación, pantallas violentas)

  [claim-bedtime-routine]

Qué evitar

• ✗

  Pegar, gritar o humillar

  [claim-corporal-punishment-harm]

• ✗

  Ignorar siempre la conducta esperando que 'se le pase' sin enseñar alternativas

  [claim-aggression-decline]

• ✗

  Etiquetar al niño como 'agresivo' o 'malo'

  [claim-process-praise]

• ✗

  Forzar a 'pedir perdón' vacío sin elaboración

  [claim-inductive-discipline]