We investigated whether individual differences in overall receptive vocabulary knowledge measured at the beginning of the year moderated the effects of a kindergarten vocabulary intervention that supplemented classroom vocabulary instruction. We also examined whether moderation would offset the benefits of providing Tier-2 vocabulary intervention…

The purpose of this closely aligned conceptual replication study was to investigate the efficacy of a Tier 2 kindergarten mathematics intervention. The replication study differed from the initial randomized controlled trial on three important elements: geographical region, timing of the intervention, and instructional context of the…

This study determined the effectiveness of Kindergarten Peer-Assisted Learning Strategies (K-PALS) for students with disabilities. The researchers randomly assigned 89 kindergartners with individualized education programs (IEPs) from 47 classrooms to control (n = 9); K-PALS Level 1 (teachers received 1-day workshop; n = 19); or K-PALS Level 2…

This study determined the effectiveness of Kindergarten Peer-Assisted Learning Strategies (K-PALS) for English Learners (ELs). We compared 20 K-PALS ELs to 20 Control ELs and to 20 K-PALS non-ELs on early reading skill acquisition, using a pretest-posttest control group design with matched samples. We also compared proportions of ELs unresponsive…