The Regulation-Related Skills Measure (RRSM) is an observational measure of young children’s regulation-related skills, including their ability to employ their executive function and self-regulation skills. The RRSM is intended to serve as an ecologically valid, objective assessment of pre-kindergarten and kindergarten children’s regulation-related skills in “real world” classroom contexts. It has been validated as a tool for research purposes, which may be used to measure regulation-related skills in order to, for example, support the evaluation of intervention efficacy. (author abstract)