id author title date pages extension mime words sentence flesch summary cache txt 8k71ng47x0r Kathryn J. Ralph Understanding Individual Differences in Attention Mechanisms, Lapses, and Complex Cognition 2019 .txt text/plain 355 15 40 Exploratory factor analyses were used to determine the construct validity of tonic alertness, phasic alertness, and lapse constructs. However, the construct validity of AC remains untested, with earlier research suggesting it is comprised of variance from both goal maintenance and alertness tasks. cache/8k71ng47x0r.txt txt/8k71ng47x0r.txt