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Harvesting and Disaggregation: An Overlooked Step in Biofilm Methods Research

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Deconstructing doctoral dissertations: how many papers does it take to make a PhD?

¹Faculty of Biosciences and Aquaculture, Bodø University College, Bodø, Norway.

|October 16, 2010

Summary

Doctoral dissertations increasingly use coauthored papers, but authorship credit lacks clear guidelines. Harmonic counting accurately measures credit, revealing a median of 1.6 papers per dissertation, and suggests a need for standardized PhD program benchmarks.

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Area of Science:

Bibliometrics
Doctoral Education
Scientific Publishing

Background:

Coauthored papers are standard for natural and biomedical science PhDs.
Current PhD guidelines lack consensus on authorship credit allocation.
Existing methods for counting authorship credit have biases.

Purpose of the Study:

To quantify authorship credit for PhD graduates using harmonic counting.
To establish a bibliometric baseline for contemporary PhD scientific productivity.
To analyze shifts in PhD publication requirements over time.

Main Methods:

Harmonic counting applied to dissertations from two Scandinavian universities (2008).
Analysis of authorship credit partitioning between PhD candidates and coauthors.
Comparison of current data with historical census data.

Main Results:

A median of approximately 1.6 undivided papers per dissertation was identified.
The baseline for requisite scientific productivity has shifted over two decades.
Decreased papers per candidate and increased coauthors per paper contribute to the shift.

Conclusions:

Harmonic counting provides accurate, unbiased authorship credit measurement.
Establishing and monitoring bibliometric benchmarks can improve PhD program quality assurance.
Standardized guidelines are needed for transparent transnational quality assurance in doctoral programs.