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相关概念视频

Language and Cognition01:27

Language and Cognition

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Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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Learning Disabilities01:25

Learning Disabilities

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Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
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In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
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Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
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E. C. Tolman emphasized the purposiveness of behavior — the idea that much of our behavior is goal-directed. For instance, employees who aim for a promotion work diligently to meet their targets. Tolman argued that when classical conditioning and operant conditioning occur, the organism acquires certain expectations. In classical conditioning, a child might fear a dog because they expect it to bite. In operant conditioning, a person might consistently work overtime because they expect a...
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相关实验视频

Updated: Jun 11, 2025

Training Synesthetic Letter-color Associations by Reading in Color
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在学习阅读时的转换字符效应:何时字母和非字母字符串的处理变得不同?

Stéphanie Massol1, Joana Acha2, Lisa Rondot1

  • 1Université Lumière Lyon 2, Laboratoire d'Étude des Mécanismes Cognitifs, 69007, Lyon, France.

Journal of experimental child psychology
|September 29, 2024
PubMed
概括

学习阅读发展了一个专门的大脑机制,用于识别单词中的字母位置. 这种位置编码是特定于字母的,并随着阅读体验而出现,而不是一般的视觉识别.

关键词:
拼写处理 拼写处理阅读发展 阅读发展转换的字符效应的影响.

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科学领域:

  • 认知心理学 认知心理学
  • 发展心理学 发展心理学
  • 神经科学是一个神经科学.

背景情况:

  • 有效的阅读依赖于将字母的身份与它们在单词中的位置联系起来.
  • 这个过程表明了编码位置不变字母位置的专门机制.

研究的目的:

  • 调查字母位置编码机制的出现和发展.
  • 要确定这个机制是特定于正写代码 (字母) 的,还是一般视觉对象识别的一部分.

主要方法:

  • 对儿童 (1-5年级) 和成年人进行了同样不同的匹配任务.
  • 刺激包括四个字符串的辅音,数字和几何形状.
  • 分析了响应时间,错误率和可歧视性指数.

主要成果:

  • 在较小的儿童 (1至2年级) 中,在所有字符类型中观察到一个转换字符效应.
  • 从3级开始,转换字符效应在字母字符串中明显大于非字母字符串.
  • 这种模式在成年人中持续存在,这表明了阅读特异性的影响.

结论:

  • 有证据支持灵活的位置编码机制,专门用于字符串.
  • 这种机制随着阅读经验而发展,这是由于字母与文字的并行处理.
  • 这些发现区分了阅读特定的视觉处理与一般的对象识别.