“…experience of insight (Bowden and Jung-Beeman, 2003b;Du et al, 2017;Kraus and Holtgraves, 2018), the mechanisms that occur in the brain when solving insight problems, such as brain networks, brain structure, brain function, and brain waves (Sandkühler and Bhattacharya, 2008;Kizilirmak et al, 2016a;Shen et al, 2016b;Rothmaler et al, 2017;Erickson et al, 2018;Ji et al, 2018;Ogawa et al, 2018;Ruggiero et al, 2018;Tik et al, 2018;Tempest and Radel, 2019), and eye movements (Huang, 2017;Huang et al, 2019). In addition, some studies focused on how individuals' attention (Cushen and Wiley, 2018;Zmigrod et al, 2019), meta-cognition (Storm and Hickman, 2015), creative thinking fluency (Ansburg, 2000), and intuition (Kizilirmak et al, 2018) influence insight problem solving. The RAT is often used to measure individuals' insight problem solving ability as well as to test the internal cognitive process (like incubation and the aha!…”