1 Throughout this article, we have adopted the four-letter identifier
(JEdP), rather than the shorter JEP, because in the field of psychology, the
latter descriptor is universally associated with the American Psychological
Association’s Journal of Experimental Psychology. By using JEdP here,
we hope to avoid any possible confusion with the latter journal.
2 In conventional methodological usage, the term “experimental mortality”
refers to the loss of study participants, typically as a result of their
dropping out of the study during its duration. Here, however, we are
referring to the loss of experimental/intervention research itself, as a result
of the reduced incidence of such studies that currently constitute the
educational research literature.