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Accreditation is linked to long-run wage gains, not higher employability

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Research area:Labour economicsEducationLabor market dynamics and wage inequality

What the study found

Institutional accreditation in Technical and Vocational Higher Education was associated with no immediate average wage effect, while wage gains appeared in the long run. The effect on employability was close to zero or slightly negative.

Why the authors say this matters

The authors conclude that quality assurance can shape earnings, but that its impact on employment may remain limited when sectoral conditions and labour-demand constraints predominate. The findings indicate that the study is relevant for assessing accreditation in Chilean TVHE and for countries facing similar challenges.

What the researchers tested

The study used repeated cross-sections from Chile and examined the labour-market outcomes of technical and vocational higher education graduates. The researchers applied a Difference-in-Differences design, complemented by a Triple-Differences specification and covariate balancing to improve comparability across cohorts.

What worked and what didn't

Wage gains appeared in the long run, but they varied across sectors and across types of TVHE graduates. There was no immediate average wage effect in the years closest to the policy. The effect on employability was weakly statistically significant and close to zero or slightly negative.

What to keep in mind

The abstract does not describe the full set of limitations. The results are specific to Chilean TVHE and to the policy context studied here.

Key points

  • Accreditation showed no immediate average effect on wages.
  • Long-run wage gains appeared, but they differed by sector and graduate type.
  • Employability effects were close to zero or slightly negative.
  • The study used repeated cross-sections from Chile with DiD and DDD methods.
  • The authors say the findings matter for Chilean TVHE and similar contexts.

Disclosure

Research title:
Accreditation is linked to long-run wage gains, not higher employability
Authors:
Otoniel Aguiar
Institutions:
Pontificia Universidad Católica de Chile
Publication date:
2026-02-24
DOI:
10.1186/s40461-026-00205-y
OpenAlex record:
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AI provenance: This post was generated by OpenAI. The original authors did not write or review this post.

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