title: What are the criteria for a good intervention study? Response: "Unrecognized ambiguities in validity of intervention research: an example on explicit phonics and text-centered teaching".
authors.affiliation: Institute of Education, Massey University Auckland, New Zealand.
authors.forename: Tom
authors.initials: T
authors.lastname: Nicholson
authors.affiliation: School of Curriculum and Pedagogy, The University of Auckland Auckland, New Zealand.
authors.forename: Laura
authors.initials: L
authors.lastname: Tse
keywords: big books; explicit phonics; intervention research; planned comparisons; post-hoc comparisons; teaching reading; text-centered teaching; validity