Objective: The goal of this meta-analysis is to improve insight into the development of cognition over the course of ALS and to assess predictors of cognitive performance. Method: A literature search was conducted in Pubmed and Web of Science on 29 July 2019 and 16 March 2021. Data were screened in Endnote® Version X9 (London, UK). Meta-analyses and meta-regressions were calculated for cross-sectional data using Rstudio®. Studies were assigned to temporal and physical categories and...