Educational Psychology Review

, Volume 25, Issue 3, pp 331-337

First online:

Recommendations for Practice: Justifying Claims of Generalizability

  • Larry V. HedgesAffiliated withInstitute for Policy Research, Northwestern University Email author 

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


Recommendations for practice are routinely included in articles that report educational research. Robinson et al. suggest that reports of primary research should not routinely do so. They argue that single primary research studies seldom have sufficient external validity to support claims about practice policy. In this article, I draw on recent statistical research that has formalized subjective notions about generalizability from experiments. I show that even rather large experiments often do not support generalizations to policy-relevant inference populations. This suggests that single primary studies are unlikely to be sufficiently generalizable to support recommendations for practice.


Replication Practice policy Generalization