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Related Concept Videos

Cognitivism01:17

Cognitivism

Cognitive psychology emerged as a significant field in the mid-20th century. It focused on understanding humans' internal mental processes. This approach emphasizes how people perceive, remember, think, and solve problems—elements critical to human cognition.
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Every mathematical equation that connects separate distinct physical quantities must be dimensionally consistent, which implies it must abide by two rules. For this reason, the concept of dimension is crucial. The first rule is that an equation's expressions on either side of an equality must have the exact same dimension, i.e., quantities of the same dimension can be added or removed. The second rule stipulates that all popular mathematical functions, such as exponential, logarithmic, and...
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Strategies of Self-Presentation III: Self-Monitoring

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Psychologists measure intelligence by using standardized tests that produce a score known as the intelligence quotient or IQ. To understand IQ tests, it's important to recognize the key principles behind their construction: validity, reliability, and standardization.
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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
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This field emerged in the mid-20th century, following a period dominated by behaviorism, which...

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Evaluating the dimensionality of perceived cognitive function.

Jin-Shei Lai1, Zeeshan Butt, Lynne Wagner

  • 1Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Rubloff Bldg., 9th floor, 750N. Lake Shore Dr., Chicago, IL 60611, USA. js-lai@northwestern.edu

Journal of Pain and Symptom Management
|June 9, 2009
PubMed
Summary
This summary is machine-generated.

Perceived cognitive function (PCF) in cancer patients has two distinct factors: cognitive problems and cognitive capabilities. Understanding this structure improves PCF assessment, aiding in identifying potential deficits needing further evaluation.

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Area of Science:

  • Neuroscience
  • Psychology
  • Oncology

Background:

  • Cognitive deficits are common in cancer patients, impacting quality of life.
  • Neuropsychological testing can be resource-intensive, necessitating efficient screening methods.
  • Perceived cognitive function (PCF) may indicate underlying neurobiological changes and precede objective deficits.

Purpose of the Study:

  • To investigate the dimensional structure of perceived cognitive function (PCF) in cancer patients.
  • To determine if PCF is best represented by a single or multiple underlying factors.
  • To inform the development of more accurate PCF assessment tools for this population.

Main Methods:

  • Analysis of data from 393 cancer patients across four clinical trials.
  • Utilized a questionnaire assessing self-reported mental acuity, concentration, memory, verbal fluency, and functional interference.
  • Employed statistical methods including Cronbach's alpha, item-total correlations, one-factor confirmatory factor analysis, and bi-factor analysis.

Main Results:

  • Data supported a two-factor structure for perceived cognitive function (PCF).
  • Items measuring cognitive problems were found to be distinct from items measuring cognitive capabilities.
  • This two-factor model demonstrated a robust fit for the PCF data.

Conclusions:

  • Perceived cognitive function (PCF) in cancer patients is multidimensional, comprising both deficit and capability aspects.
  • A two-factor scoring approach for PCF is recommended for improved assessment accuracy.
  • This refined measurement can better identify cancer patients who may benefit from comprehensive neuropsychological evaluations.