@article{Stumbrys_Erlacher_Schredl_2013, title={Reliability and stability of lucid dream and nightmare frequency scales}, volume={6}, url={https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/11137}, DOI={10.11588/ijodr.2013.2.11137}, abstractNote={<p>Lucid dream and nightmare frequencies vary greatly between individuals and to assess these differences reliable instruments are needed. The present study aimed to examine the reliability of eight-point scales for measuring lucid dream and nightmare frequencies. The scales were administered twice (with a four-week interval) to 93 sport students. A re-test reliability for the lucid dream frequency was found r=.89 (p<.001) and for the nightmare frequency r=.75 (p<.001). Both eight-point scales appear to be reliable measures for assessing individual differences in lucid dream and nightmare frequencies.</p>}, number={2}, journal={International Journal of Dream Research}, author={Stumbrys, Tadas and Erlacher, Daniel and Schredl, Michael}, year={2013}, month={Oct.}, pages={123–126} }