Signal Detection Theory

In this video I explain how signal detection theory relates to psychophysics and the study of absolute and difference thresholds. I also explain how response criteria play a role in signal detection theory and the possibility of type I and type II errors. Finally, I consider applications of signal detection theory in daily life, from detecting dangers to dating. Don’t … Read More

Psychophysics!

In this video I introduce psychophysics and explain the difference between the absolute threshold and the difference threshold (or just noticeable difference). I also discuss the difficulties of measuring our sensitivity to stimulation and provide a simple demonstration of Weber’s Law, which is that the difference threshold relates to proportions of change rather than amounts of change. Don’t forget to … Read More