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Related Concept Videos

Subconsciousness and No Awareness01:15

Subconsciousness and No Awareness

The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
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Purposive Learning01:22

Purposive Learning

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 bonus...
Implicit Memories01:24

Implicit Memories

Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
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Visual Agnosia

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Schemas

A schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.

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Related Experiment Video

Updated: Jun 4, 2026

Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI
12:51

Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI

Published on: October 6, 2011

Knowing not.

P A Kolers1, S R Palef

  • 1Department of Psychology, University of Toronto, M5S 1A1, Toronto, Canada.

Memory & Cognition
|February 3, 2011
PubMed
Summary
This summary is machine-generated.

People can quickly recognize when they don't know something. This study found that knowing "not" can be as fast as knowing facts, challenging previous theories on knowledge acquisition.

Related Experiment Videos

Last Updated: Jun 4, 2026

Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI
12:51

Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI

Published on: October 6, 2011

Area of Science:

  • Cognitive Psychology
  • Metacognition
  • Epistemology

Background:

  • Theorists often assume recognizing ignorance (knowing not) arises solely from failing to confirm knowledge.
  • Contemporary theories have not extensively explored the speed and mechanisms of recognizing one's own lack of knowledge.
  • Existing models suggest knowing not is a secondary state, dependent on failed attempts to know.

Purpose of the Study:

  • To investigate the speed and cognitive processes underlying the recognition of not knowing.
  • To challenge the assumption that knowing not is merely a consequence of failing to know.
  • To explore whether knowing not can be an immediate cognitive state.

Main Methods:

  • A reaction time experiment was designed to measure the speed of "knowing not."
  • Participants were asked about their knowledge of common nouns and familiarity with specific cities.
  • Response times for positive affirmations (e.g., "I know this") and negative affirmations (e.g., "I don't know this") were recorded.

Main Results:

  • Affirmations of negation (reporting "I don't know") were frequently faster than positive reports of knowledge.
  • This finding contradicts the idea that knowing not is simply the complement of knowing.
  • The speed of recognizing ignorance suggests a more direct cognitive pathway.

Conclusions:

  • Knowing not can be achieved as rapidly as positive knowledge.
  • The ability to execute analytical procedures may facilitate rapid recognition of not knowing.
  • This suggests a more direct and potentially primary cognitive process for identifying ignorance.