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Related Concept Videos

Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
Frequency-dependent Selection01:21

Frequency-dependent Selection

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
Antibiotic Selection00:57

Antibiotic Selection

Overview
Limits to Natural Selection01:38

Limits to Natural Selection

Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.
Mate Choice01:20

Mate Choice

Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.

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Related Experiment Video

Updated: May 7, 2026

The Use of Chemostats in Microbial Systems Biology
13:19

The Use of Chemostats in Microbial Systems Biology

Published on: October 14, 2013

A century of selection.

Ann Marie Ryan1, Robert E Ployhart

  • 1Department of Psychology, Michigan State University, East Lansing, Michigan 48824;

Annual Review of Psychology
|September 21, 2013
PubMed
Summary

This review covers over 100 years of employee selection research, highlighting advances in designing, implementing, and evaluating systems. It discusses technology

Area of Science:

  • Industrial-Organizational Psychology
  • Human Resources Management
  • Organizational Behavior

Background:

  • Employee selection research spans over a century, marked by continuous advancements and persistent challenges.
  • The field grapples with ongoing controversies, revisits established topics, and pushes the boundaries of knowledge.
  • Technological integration has significantly reshaped both the research and practical application of employee selection.

Purpose of the Study:

  • To review recent progress in the design, implementation, and evaluation of employee selection systems.
  • To identify and discuss key emerging trends within the field of employee selection.
  • To highlight areas where practical application outpaces research and suggest future research directions.

Main Methods:

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  • Literature review of recent advances in employee selection.
  • Discussion of key trends including criterion space expansion, situational judgment tests, and socially desirable responding.
  • Analysis of technology's impact on selection research and practice.

    • Main Results:

    • Significant technological advancements have transformed the landscape of employee selection research and practice.
    • Progress has been made in areas such as expanding the criterion space and improving situational judgment tests.
    • Challenges remain, including addressing socially desirable responding and identifying practice areas lacking research support.

    Conclusions:

    • The field of employee selection is dynamic, continually evolving with technological integration and new research directions.
    • Future research should focus on bridging the gap between practice and empirical evidence, particularly in technology-driven selection methods.
    • Addressing persistent issues like socially desirable responding remains crucial for robust employee selection processes.