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Merry Christmas everyone! Today we go over Weber's law (an MCAT Psychology topic) and Just Noticeable Difference, a fairly simple concept mathematically—if you've seen it before, that is—and how it might commonly be tested on the MCAT. Weber's law states that the ratio between the difference between the original and changed stimulus to the original stimulus will always be constant (k). I represents our original stimulus, and deltaI represents the change in our stimulus. Weber's law is typically conceptualized in terms of auditory or tactile stimulus (e.g. our weightlifter example question), but in the honor of Christmas and my love of Harry Potter, I wanted to switch things up a little bit for my explanation. This also ties in with signal detection theory and thresholds.

Image Credit: Harry Potter images are property of Warner Bros Studios.
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Time Stamps:
Weber's Law Explained - 00:00
Practice Question - 3:00

#weberslaw #justnoticeabledifference
Weber's Law and Just Noticeable Difference + Practice Question | MCAT Psychology
Weber's Law and Just Noticeable Difference + Practice Question | MCAT Psychology
Weber's Law and Just Noticeable Difference + Practice Question | MCAT Psychology

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