Over the past few decades, research on sluggish cognitive tempo (SCT) has grown at an exponential rate, with the number of published studies mentioning SCT doubling between 1985 and 2000, doubling again between 2000 and 2010, and doubling again between 2010 and 2014. As Becker described in the review published in this issue, ad hoc measurement of SCT hindered early research, but this began to change in 2009 with the publication of the first rating scale specifically designed to measure SCT and developed using empirically supported principles. In the decade since, Becker's (as well as numerous others') efforts have meaningfully and significantly contributed to improving the measurement of SCT in several ways. His latest review study is an important addition to this line of research. Specifically, in the review article published in this issue, Becker comprehensively searched for measures of SCT and then systematically reviewed the psychometric and other properties of the identified measures.