Hi badminton players, We need your help! For our bachelor thesis, we, students of the Radboud University Nijmegen in the Netherlands, are researching Sport Psychology and for this, we need participants of 18 years or older who play badminton (or volleybal, tennis or table tennis) competitively. It would be of great help if you could fill in our anonymous survey, which would only take you 10-15 minutes. The questionnaire starts with an information letter, in which more there is more information about our research. This is the link to our questionnaire: https://psychru.qualtrics.com/jfe/form/SV_0U7oU0iQaxAAtVz We would appreciate it if you would like to help us. Thank you in advance! Kind regards, Romee, Tjeu, Alex and Ellen