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Updated: Jan 11, 2026

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
Published on: March 1, 2022
The two-tier model: an unbalanced view
Aurelio José Figueredo1, Mateo Peñaherrera-Aguirre1, Steven C Hertler2
1University of Arizona, Tucson, AZ, USA ajf@arizona.edu mpeaher@arizona.edu.
Abstract:
ER&K recurrently emphasize one side of three equations: (1) extrinsic rather than intrinsic mortality pressures; (2) developmental rather than genetic influence; and (3) individual rather than population-level effects. Furthermore, they insufficiently disambiguate extrinsic from intrinsic mortality, especially confounding how mortality evolutionarily constrains and developmentally calibrates genotypic life history speed, and struggle to explain population-level differences in fast maturation among modern populations.
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