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Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

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The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
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Attachment01:20

Attachment

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Attachment is vital for infant development, as warm social interactions support growth and well-being. In a classic 1958 study by Harry Harlow, the significance of warmth and comfort in forming attachments was examined. Harlow separated newborn monkeys from their mothers and provided two artificial "mothers": one made of cold wire and the other covered in soft cloth. Despite the wire mother offering food, the infant monkeys preferred the comfort of the cloth mother, demonstrating that...
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Socioemotional Development during Infancy01:30

Socioemotional Development during Infancy

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Socio-emotional development in infancy is primarily shaped by early emotional responses and social connections, with temperament playing a central role. Temperament refers to the consistent patterns in an individual's emotional and behavioral responses, observable even in infancy. By examining temperament, researchers can better understand an infant's unique ways of interacting with the world, influencing subsequent personality and socio-emotional growth.
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Parental Care00:55

Parental Care

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Many animals exhibit parental care behavior, including feeding, grooming, and protecting young offspring. Parental care is universal in mammals and birds, which often have young that are born relatively helpless. Several species of insects and fish, as well as some amphibians, also care for their young.
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Parenting Styles01:27

Parenting Styles

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Diana Baumrind's four parenting styles — authoritarian, authoritative, neglectful, and permissive — each influence children's socio-emotional development differently.
Authoritarian Parenting
This style is strict and controlling, with little room for open dialogue. Authoritarian parents demand obedience and often enforce rules with minimal warmth. Children raised this way may lack social skills and initiative, usually comparing themselves to others unfavorably.
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Theory of Romantic Attachment in Adulthood03:34

Theory of Romantic Attachment in Adulthood

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Attachment is a long-standing connection or bond with others. While Attachment Theory was conceived in developmental psychology to describe infant-caregiver bonding, it's been extended into adulthood to include romantic relationships. 
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Video Experimental Relacionado

Updated: Jan 17, 2026

Author Spotlight: Marmoset Research - Scope and Challenges
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Author Spotlight: Marmoset Research - Scope and Challenges

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No es un bebé grande.

Andrew A Farke1

  • 1Raymond M. Alf Museum of Paleontology, The Webb Schools, Claremont, CA, USA.

Science (New York, N.Y.)
|January 15, 2026
PubMed
Resumen

Una nueva investigación resuelve el debate en torno a la especie fósil Nanotyrannus. Múltiples enfoques científicos confirman su validez, aclarando su lugar en la evolución de los dinosaurios.

Área de la Ciencia:

  • Paleontología
  • Zoología de los vertebrados
  • Biología evolutiva

Sus antecedentes:

  • El estatus taxonómico de Nanotyrannus lancensis ha sido un debate de larga data en la paleontología.
  • Estudios anteriores han dado interpretaciones contradictorias con respecto a su validez como una especie distinta o una forma juvenil de Tyrannosaurus rex.

Objetivo del estudio:

  • Para resolver definitivamente el debate taxonómico que rodea a las especies fósiles Nanotyrannus lancensis.
  • Establecer el consenso científico sobre la validez y la posición filogenética de Nanotyrannus.

Principales métodos:

  • Utilizó un enfoque multifacético que combina la osteología comparativa, el análisis histológico y la clasificación filogenética.
  • Examinó especímenes fósiles clave atribuidos a Nanotyrannus, incluido un análisis detallado de la microestructura ósea y la morfología craneal.

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Principales resultados:

  • La evidencia de múltiples líneas de investigación apoya a Nanotyrannus como un género y especie distintos.
  • Los datos histológicos indican patrones de crecimiento adultos inconsistentes con un juvenil Tyrannosaurus rex.
  • Las comparaciones morfológicas revelan características únicas que lo diferencian de otros tiranosaurios.

Conclusiones:

  • La especie fósil Nanotyrannus lancensis está validada como un taxón distinto.
  • Esta resolución aclara la diversidad y la historia evolutiva de los dinosaurios tiranosaurios.