Our paper on the lag effect and the important role of the retention interval for optimizing vocabulary learning in middle-school students was accepted and will be published in Instructional Science.
Küpper-Tetzel, C. E., Erdfelder, E., & Dickhäuser, O. (forthcoming). The Lag Effect in Secondary School Classrooms: Enhancing Students’ Memory for Vocabulary. Instructional Science, XX, p. XXX-XXX.