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Discrimination Learning

Discrimination Learning. Psychology 3906. Introduction. Discrimination and classification can lead to many things Recognition Kin food Fights mating. Some basics. Sign stimuli and sticklebacks Many stimuli together, might get heterogeneous summation

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Discrimination Learning

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  1. Discrimination Learning Psychology 3906

  2. Introduction • Discrimination and classification can lead to many things • Recognition • Kin • food • Fights • mating

  3. Some basics • Sign stimuli and sticklebacks • Many stimuli together, might get heterogeneous summation • Sometimes more extreme values are responded to • Supernormal stimulus • With experience you can get perceptual sharpening

  4. Classification • Objectss/attributes may be discriminable but, may not control behaviour • Additivity or interaction can occur • Non natural objects may be the best! • Motivation can play a huge role

  5. Learned discrimination • Songbirds • Marler et al • Stats, psychophysics and field biology • Jeff Cynx has shown that the reproductive condition of the listner matters

  6. Mimicry • Some insects are aposematic and successful, why not copy? • Batesian mimicry • Colouration is similar to toxic species, but the prey item is not toxic

  7. Mullerian Mimicry • In Mullerian mimicry, all species that share a colouration are dangerous • Many snakes use this • Also may have characteristics that make prey look like a predator!

  8. Peak Shift

  9. OK, so that is odd • Why does that happen? • Excitatory gradient • Inhibitory grandient • As the Violent Femmes would say, you gotta add it up

  10. Bird brain is not an insult • Concept learning • Natural needed? • How long lasting • Delius (1982) • Honig and Stewart (1988) • The field of comparative cognition really grew out of much of this stuff

  11. Categories and Concepts • Hernstien and tree vs non tree • Go no go • New slides, better than chance • Real vs pseudocategories • Once you get the behaviour, go after the contents • Features? • Prototypes?

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