A medical education researcher wants to investigate whether listening to 40 Hz binaural beats improves the precision and speed of medical students performing a wound suturing task under time pressure. Students are randomly allocated to either a group listening to binaural beats or a control group listening to silent static. The researcher measures performance strictly through quantitative data: the total number of secure, correctly spaced sutures completed in a three-minute interval, and the tension variance of the stitches measured in Newtons via electronic tissue sensors.
Outline one strength and one weakness of not collecting any qualitative data in this study.
