Cognitive scientists want to investigate the impact of auditory stimulation on working memory performance. They want to study if adult participants make fewer recall errors on a computerized grid-pattern memory test after listening to 20 minutes of 6 Hz theta-frequency binaural beats compared to sitting in silence for 20 minutes. The study will be conducted at a university research facility with 150 volunteers.
Write a directional (one-tailed) alternative hypothesis for this study.
