“…The measure has been used for various purposes, for example, to support the flight deck design process (e.g., Banks et al, 2018;Li & Chen, 2020), to examine the workload imposed by different in-flight failures (Etherington et al, 2016) or procedures (Efthymiou et al, 2019), and to validate or corroborate other measures of workload. Such measures include heart rate (e.g., Alaimo et al, 2021;Mansikka et al, 2018Mansikka et al, , 2019, bilateral prefrontal cortex blood oxygenation using functional near-infrared spectroscopy (e.g., Bishop et al, 2021;Matthews et al, 2015), pupillometry (Silva et al, 2021), and respiratory sinus arrhythmia (Muth et al, 2012).…”