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A Note on PhD Population Growth in Biomedical Sciences.

Navid Ghaffarzadegan1, Joshua Hawley2, Richard Larson3

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This summary is machine-generated.

The number of biomedical PhDs has surged, leading to a critical shortage of academic jobs. With only one tenure-track position for every 6.3 graduates, the system faces instability and requires greater transparency about career risks.

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Area of Science:

  • Biomedical Sciences
  • Academia
  • Science Policy

Background:

  • The rapid growth of postdoctoral researchers in biomedical fields presents a significant challenge for science policymakers.
  • Understanding the dynamics of PhD population growth is crucial for effective science workforce development.

Purpose of the Study:

  • To analyze the factors contributing to the increasing number of PhDs in biomedical sciences.
  • To assess the availability of academic positions relative to PhD graduates.
  • To identify systemic flaws in science workforce development.

Main Methods:

  • Utilized the "basic reproductive number in academia" (R ) parameter to model PhD population growth.
  • Analyzed trends in R within biomedical fields over time.
  • Estimated the ratio of tenure-track positions to PhD graduates in the US.

Main Results:

  • The basic reproductive number in academia (R ) has increased in biomedical fields.
  • There is an estimated one tenure-track position for every 6.3 PhD graduates in the US.
  • A significant proportion of PhD graduates face limited academic career options.

Conclusions:

  • The current system for science workforce development in biomedical fields is characterized by structural reasons and systemic flaws, including reinforcing feedback loops that lead to PhD over-production.
  • The system is deemed unstable with no immediate solutions.
  • Full disclosure of the risks associated with pursuing a PhD is suggested as a measure to mitigate the effects of these reinforcing loops.