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just noticeable difference jnd ✔✔minimum difference in magnitude between two stimuli before one can perceive this difference Weber's law ✔✔there is a constant ratio between the change in sti... mulus magnitude needed to produce a jnd (higher stimulus will need a larger difference to produce a jnd) Signal detection theory ✔✔changes in out perception of the sam stimuli depending on both internal and external context (how loud would someone need to yell your name in a crowd for you to hear their name?) response bias ✔✔subjects respond in a certain way due to non sensory factors duplexity (duplicity theory of vision) ✔✔retina contain two kinds of photoreceptores: those specialized for light and dark detection and those specialized for color section cones ✔✔used for color vision and sense fine details- most effective in bright light and comes in 3 forms (blue, red, green) [Show More]

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