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Humans are very diverse and although we share many similarities, we also have many differences. The social groups we belong to help form our identities (Tajfel, 1974). These differences may be difficult for some people to reconcile, which may lead to prejudice toward people who are different. Prejudice is a negative attitude and feeling toward an individual based solely on one’s membership in a particular social group (Allport, 1954; Brown, 2010). Prejudice is common against people who...
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Perpendicular-Axis Theorem01:16

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The perpendicular-axis theorem states that the moment of inertia of a planar object about an axis perpendicular to its plane is equal to the sum of the moments of inertia about two mutually perpendicular concurrent axes lying in the plane of the body.
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Behaviorism01:28

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The field of behaviorism was pioneered by figures such as Ivan Pavlov, John B. Watson, and B.F. Skinner fundamentally shifted the focus of psychology to the observable and controllable aspects of human and animal behavior. This shift marked a critical evolution in the discipline, emphasizing scientific rigor and experimental methodology.
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
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Law of Effect01:06

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B.F. Skinner, a prominent figure in behavioral psychology, introduced operant conditioning by emphasizing the role of consequences in shaping behavior. This theory builds upon the law of effect proposed by Edward Thorndike, which posits that behaviors followed by satisfying outcomes are likely to be repeated. In contrast, those followed by unsatisfying outcomes are less likely to recur.
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Introduction to Cognitive Psychology01:20

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Cognitive psychology is the field of psychology dedicated to examining how people think. It attempts to explain how and why we think the way we do by studying the interactions among human thinking, emotion, creativity, language, and problem-solving, as well as other cognitive processes. Cognitive psychology studies how information is processed and manipulated in remembering, thinking, and knowing.
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Gordon Allport, often regarded as the father of American personality psychology, developed a theory that emphasized the importance of understanding people in their present lives rather than focusing on their past, as psychoanalysis did. Allport believed that personality should be studied in healthy, well-adjusted individuals rather than those with psychological problems. He was particularly interested in defining traits, which he saw as fundamental mental structures that guide behavior across...
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Video Experimental Relacionado

Updated: Apr 4, 2026

Dissection of Imaginal Discs from 3rd Instar Drosophila Larvae
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Donald D. Brown (1931-2023) fue un escritor estadounidense.

Steven McKnight1, Allan Spradling2

  • 1University of Texas Southwestern Medical Center, Dallas, TX, USA.

Science (New York, N.Y.)
|July 13, 2023
PubMed
Resumen

Este estudio pone de relieve las contribuciones fundamentales del padre de la embriología molecular. Su trabajo pionero sentó las bases para comprender los primeros procesos de desarrollo a nivel molecular.

Área de la Ciencia:

  • Biología del desarrollo
  • Biología molecular
  • La genética

Sus antecedentes:

  • El campo de la embriología se ha basado históricamente en métodos de observación.
  • Comprender los mecanismos moleculares que impulsan el desarrollo embrionario es crucial.

Objetivo del estudio:

  • Para reconocer las contribuciones seminales de una figura clave en la embriología molecular.
  • Para subrayar la importancia de su investigación fundamental en la configuración del campo.

Principales métodos:

  • Análisis histórico de la literatura científica.
  • Revisión de trabajos de investigación fundamentales y su impacto.

Principales resultados:

  • Identificó publicaciones y descubrimientos clave del "padre de la embriología molecular".

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  • Demostró el cambio de paradigma iniciado por su trabajo, integrando ideas moleculares en estudios de desarrollo.

    • Conclusiones:

    • El trabajo del individuo estableció la embriología molecular como una disciplina científica distinta y vital.
    • Su investigación continúa influyendo en la moderna biología del desarrollo y los estudios genéticos.