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Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

1.6K
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.
Exploration...
1.6K
Attachment01:20

Attachment

500
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...
500
Socioemotional Development during Infancy01:30

Socioemotional Development during Infancy

433
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.
Primary Temperament Types
433
Parental Care00:55

Parental Care

12.7K
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.
12.7K
Parenting Styles01:27

Parenting Styles

591
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.
Authoritative...
591
Theory of Romantic Attachment in Adulthood03:34

Theory of Romantic Attachment in Adulthood

48.6K
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. 
48.6K

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相关实验视频

Updated: Jan 17, 2026

Author Spotlight: Marmoset Research - Scope and Challenges
04:52

Author Spotlight: Marmoset Research - Scope and Challenges

Published on: June 9, 2023

2.6K

不是一个大婴儿

Andrew A Farke1

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

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

新的研究解决了围绕纳米 Tyrannus 化石物种的争论. 多种科学方法证实了它的有效性, 澄清了它在恐龙进化的地位.

科学领域:

  • 古生物学
  • 脊椎动物学
  • 进化生物学

背景情况:

  • 纳米龙的分类地位在古生物学中一直是个长期的争论.
  • 之前的研究已经产生了关于它作为特异物种或Tyrannosaurus rex的少年形式的矛盾解释.

研究的目的:

  • 为了最终解决围绕化石物种Nanotyrannuslancensis的分类学辩论.
  • 建立关于纳米的有效性和遗传地位的科学共识.

主要方法:

  • 采用了多方面的方法,结合了比较骨科,组织学分析和基因组分类.
  • 检查了归因于纳诺 Tyrannus 的关键化石标本,包括骨微观结构和形态的详细分析.

主要成果:

  • 来自多个调查线的证据支持纳米作为一个独特的属和物种.
  • 组织学数据显示成人的生长模式与青少年Tyrannosaurus rex不一致.
  • 形态上的比较显示出它与其他类恐龙有着独特的特征.

结论:

  • 化石物种Nanotyrannus lancensis被证实为一个不同的分类.
  • 这一决议阐明了恐龙的多样性和进化历史.

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A Common Marmoset Model of Mother-Infant Intervention for Breastfeeding Disorders in the Presence of Paternal Inhibition and Maternal Neglect
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