All participants will first fill out the information sheet. For the experimental manipulation, participants will be randomly assigned to solve the social desirability scale in either a fast or slow condition. All participants will first be told: We are going to ask you 10 true or false questions on one page at a time. These statements are about your personal attitudes and characteristics. Please read each statement carefully and indicate whether it is true or false, that is, whether it applies to you or not. In the fast condition, participants will first be told: Please continue reading **now**. The next screen will appear **very soon**. On the next 10 screens, you will need to **read and answer each question in less than 11 seconds** in order to receive payment. If you take more than 11 seconds to submit your decision, **you may not get paid**." This screen will automatically move on after 15 seconds [all following Isler et al., 2018]. In the slow condition participants will be told: Please continue reading **now**. The next screen will appear **very soon**. On the next 10 screens, you will need to r**ead and think for more than 11 seconds for each question before submitting your answer** in order to be eligible for payment. If you submit your decision in less than 11 seconds, **you may not get paid**." This screen will automatically move on after 15 seconds[all following Isler et al., 2018]. Then, on each page, one at a time, participants will be asked the following questions (all in ranodm order) Social desireability scale: I have never intensely disliked anyone *I sometimes feel resentful when I don't get my way No matter who I'm talking to, I'm always a good listener *There have been occasions when I took advantage of someone I'm always willing to admit it when I make a mistake *I sometimes try to get even, rather than forgive and forget *There have been occasions when I felt like smashing things *There have been times when I was quite jealous of the good fortune of others I have never felt that I was punished without cause I have never deliberately said something that hurt someone's feelings asterisked items are reverse coded. All participants will be asked these questions on a True/False scale with True=1/False=0 (unnumbered) unless reverse coded. Participants will be randomly assigned to have either False on the left or True on the left. **References** Isler, O., Maule, J., & Starmer, C. (2018). Is intuition really cooperative? Improved tests support the social heuristics hypothesis. *PloS one*, 13(1), e0190560. Vésteinsdóttir, V., Reips, U. D., Joinson, A., & Thorsdottir, F. (2017). An item level evaluation of the Marlowe-Crowne Social Desirability Scale using item response theory on Icelandic Internet panel data and cognitive interviews. *Personality and Individual Differences*, 107, 164-173.