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Growth versus Fixed Mindset01:24

Growth versus Fixed Mindset

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Carol Dweck introduced the term mindset to describe individuals' beliefs about their intellectual and personal capabilities. These beliefs significantly influence psychological processes such as motivation, goal-setting, and perseverance, ultimately shaping academic and life outcomes. Individuals generally possess one of two mindsets- a fixed or a growth mindset—each promoting different responses to success, failure, and challenge.Fixed vs. Growth MindsetA fixed mindset assumes that one's...
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Timing and Consequences on Behavior01:08

Timing and Consequences on Behavior

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In operant conditioning, the timing of reinforcement is crucial. For animals like rats and cats, immediate reinforcement (within a few seconds) is much more effective than delayed reinforcement. For example, a food reward for a rat needs to follow within 30 seconds of pressing a bar to be effective. 
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
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Law of Effect01:06

Law of Effect

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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.
Edward Thorndike's foundational work involved studying learning in animals, particularly using puzzle...
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Operant Conditioning01:21

Operant Conditioning

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Operant conditioning, a key concept in behavioral psychology, involves using reinforcement and punishment to alter the likelihood of a behavior being repeated. B.F. introduced this type of conditioning. Skinner focused on voluntary behaviors and the consequences that follow them, influencing whether these behaviors will be strengthened or diminished.
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...
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Self-Discrepancy Theory02:45

Self-Discrepancy Theory

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One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.  
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Generalization, Discrimination, and Extinction01:24

Generalization, Discrimination, and Extinction

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Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
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Related Experiment Video

Updated: Oct 16, 2025

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats
09:12

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats

Published on: March 17, 2019

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Grit and consequence.

Luke D Fannin1,2, Elzanne Singels3, Karen J Esler3

  • 1Department of Anthropology, Dartmouth College, Hanover, New Hampshire, USA.

Evolutionary Anthropology
|October 15, 2021
PubMed
Summary
This summary is machine-generated.

Grit

Keywords:
crystalline quartzdental weardustenamel thicknesshypsodontyplant phytolithssiliceous particulate matter

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Area of Science:

  • Evolutionary anthropology
  • Primate natural history

Background:

  • Grit's role in tooth wear, fracture, and evolution is acknowledged.
  • However, the formal properties of grit itself are poorly understood.

Purpose of the Study:

  • To define grit beyond its consequences.
  • To highlight the need for empirical research on grit's properties and variation.

Main Methods:

  • Philosophical analysis of scientific discourse on grit.
  • Identification of empirical research gaps.

Main Results:

  • Current understanding of grit overemphasizes its effects.
  • Key variables like mineral composition, material properties, and particle geometry are neglected.

Conclusions:

  • A formal definition and empirical study of grit are needed.
  • Understanding grit is crucial for primate evolution and natural history.