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How can you measure cognitive load?
One of the first subjective measures of cognitive load was developed by Paas (1992). In this study, learners were asked to indicate on a 9-point Likert scale “how much mental effort they have invested in a task”, ranging from 1 (very, very low mental effort) to 9 (very, very high mental effort).
What is the PAAS scale?
In fact, the scale used by Paas consists of one item, and participants are asked to use a 9-point Likert scale for their responses, ranging from very, very low mental effort (1) to very, very high mental effort (9).
