Construct · 5 fields · 7 citations
One name. Different field. Different construct. One map.
● jingle · one word, five constructs Nearest construct by meaningproximitycompare the meaningsEvery construct on the map is compared with every other by the meaning of its definitions, and the closest one is surfaced here. The nearest construct to crowding is proximity.
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The breakdown of recognition that happens when a target in peripheral vision sits close to other objects, so a letter read easily on its own becomes unidentifiable once it is flanked. Korte's 1923 study of indirect vision (Über die Gestaltauffassung im indirekten Sehen) first described how neighbouring forms interfere with a shape seen away from the point of fixation, and Bouma's 1970 Interaction effects in parafoveal letter recognition quantified the spacing at which flankers stop disrupting the target. The referent is a limit on spatial resolution in the visual system, measured in degrees of visual angle, and it has nothing to do with a stressful feeling of too many people, government borrowing, or proteins packed inside a cell.[1][2]
The psychological strain a person feels when the demand for space exceeds what is available, kept distinct from density, which is the physical number of people per unit of area. Stokols's 1972 On the distinction between density and crowding separated the objective count of people in a space from the subjective, stressful experience of feeling hemmed in, and argued that the same density can feel very different depending on context. The referent is an experienced state of stress inside a person, assessed by report and physiological response, not a letter obscured by its neighbours, capital displaced by public borrowing, or molecules jammed together in solution.[3]
The displacement of private economic activity by government action, most often the fall in private investment or consumption when the state borrows or spends to finance a deficit. Blinder and Solow's 1973 Does fiscal policy matter? gave an early formal treatment of how government borrowing can raise interest rates and offset the intended boost, framing the long debate over how much public spending replaces private spending. The referent is a macroeconomic offset measured in currency and interest rates, and it is unrelated to letters lost in the periphery, the stress of a packed room, or crowded proteins in a cell.[4]
The effect of the very high total concentration of macromolecules inside a cell on the behaviour of any one of them, where proteins and nucleic acids occupy so much volume that reactions, folding, and binding are altered. Minton and Wilf's 1981 Effect of macromolecular crowding upon the structure and function of an enzyme introduced the term and showed that inert background molecules changed an enzyme's activity, and Minton's 2001 The influence of macromolecular crowding and macromolecular confinement on biochemical reactions set out the theory for physiological media. The referent is a physical-chemistry condition inside a solution, scaled by how much volume the molecules occupy, and it is not letters interfering in the eye, the stress of a dense space, or public spending displacing private.[5][6]
In emergency medicine, crowding refers to the state in which the need for emergency services exceeds the resources available in the department, linked to delays and worse outcomes. This meaning comes from Hoot (2008) in Annals of Emergency Medicine.[7]
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