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Related Concept Videos

Base Quantities and Derived Quantities01:14

Base Quantities and Derived Quantities

In any system of units, the units for some physical quantities must be specified through a measurement process. These measurements are the base quantities of the system, and their units are the base units of the system. The algebraic combinations of the base values can then be used to express all other physical quantities. Each of these physical quantities is then referred to as a derived quantity, with each unit being referred to as a derived unit.
The International Organization for...
Units and Standards of Measurement01:10

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A physical quantity is defined either by specifying its measurement method or by stating how it is calculated from other measurements. For example, consider a metallic cube. We might define its mass and dimensions by specifying methods for measuring them, such as using a weighing machine and a meter scale. Then, we could define the volume by stating that it is the cube of its side, and we could calculate the density as the mass divided by the volume.
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Units and Standards of Measurement01:10

Units and Standards of Measurement

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Scalar and Vectors

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Variables and quantity: what else?

Santo Di Nuovo1

  • 1University of Catania, Catania, Italy. s.dinuovo@unict.it

Integrative Psychological & Behavioral Science
|November 29, 2008
PubMed
Summary
This summary is machine-generated.

This commentary critiques quantitative psychology, arguing that variables may oversimplify inner mental processes. It proposes a constructivist, hermeneutic approach for a more nuanced understanding of psychological phenomena.

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Area of Science:

  • Psychology
  • Philosophy of Science

Background:

  • Critiques the use of variables in quantitative psychology, referencing Toomela's work.
  • Examines issues in variable selection, measurement, and statistical analysis within psychology.
  • Highlights limitations of quantitative methods in representing complex inner psychological processes.

Discussion:

  • Argues that variables, if misused, can be misleading in psychological research.
  • Contends that variable-based psychology struggles to capture the full scope of inner mental states.
  • Discusses challenges posed by linear causality and probabilistic inference in quantitative psychological analysis.

Key Insights:

  • Quantitative psychology faces inherent limitations in representing subjective experiences.
  • Alternative analytical approaches are necessary to address the shortcomings of traditional methods.
  • A constructivist perspective is crucial for understanding the nature of psychological knowledge.

Outlook:

  • Suggests a hermeneutic approach as a more suitable framework for psychological inquiry.
  • Advocates for integrating constructivist epistemology into psychological research methodologies.
  • Proposes a shift towards qualitative and interpretive methods to complement quantitative approaches.