Lawful kinematics link eye movements to the limits of high-speed perception

Summary

ParticipantsFor all experiments, we recruited participants through word of mouth and campus mailing lists. They were naïve as to the purpose of the study, had normal or corrected-to-normal vision, and received monetary compensation for their participation. Before starting the first session, they provided informed written consent. Nobody besides a research assistant and the participant were present during the data collection. Experimenters were blinded to the experimental conditions and the study hypotheses. All studies were done in agreement with the Declaration of Helsinki in its latest version (2013), approved by the Ethics Committee of the Deutsche Gesellschaft für Psychologie (Experiments 1, 3, and 4) or the Ethics board of the Department of Psychology at Humboldt-Universität zu Berlin (Experiments 2a, 2b, and 5). No statistical method was used to predetermine sample size. All experiments were pre-registered at the Open Science Framework (OSF; links provided below). Participant gender data summarized below was based on self-report. The variable was surveyed for these descriptive purposes only and considered in neither study design nor data analyses.Experiment 1Ten participants (18–32 years old; 7 female; 6 right-eye dominant; all right-handed) completed all sessions and received 25€ as remuneration. Three additional participants were recruited but had to be excluded as they did not complete all sessions. The pre-registration of the study is available at https://doi.org/10.17605/OSF.IO/AJY7D.Experiment 2aTen participants (19–28 years old; 8 female and 2 male; 3 right-eye dominant; 8 right-handed) completed all sessions and received 44€ as remuneration. Three additional participants were recruited but had to be excluded as they did not complete all sessions. The pre-registration of the study is available at https://doi.org/10.17605/OSF.IO/32QFP.Experiment 2bTen participants (21–35 years old; 6 female and 4 male; 8 right-eye dominant; 9 right-handed) completed all ...