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# 324 03 part 2 classical conditioning

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### 324 03 part 2 classical conditioning

1. 1. Human Learning Topic 3: Part 2 Respondent Conditioning BasicsCEDP 324 Ryan Sain, Ph.D. 1 3/29/2012
2. 2. Excitatory Conditioning The CS elicits activity related to the US  Without the US  Show fear in presence of furry creatures Your system is ‘excited’  A response is added.CEDP 324 Ryan Sain, Ph.D. 2 3/29/2012  A connection added.
3. 3. Delay Conditioning ISI < 1 minuteISI typically 5-10 minutesCEDP 324 Ryan Sain, Ph.D. 3 3/29/2012
4. 4. Trace Conditioning •Sometimes called a ‘trace interval’ •Typically the ISI or TI is less than 1 minuteCEDP 324 Ryan Sain, Ph.D. 4 3/29/2012
5. 5. Simultaneous Seems to make sense – but it is not very effectiveCEDP 324 Ryan Sain, Ph.D. 5 3/29/2012
6. 6. How to measure CRs?  Magnitude  Strength, quantity  Probability  Likelihood that a CS  CR  Latency  CS … or ……… CRCEDP 324 Ryan Sain, Ph.D. 6 3/29/2012
7. 7. Inhibitory Conditioning Rather the devil you know, than the devil you don’t!  Predictability is powerful Signaling the absence of a US.  Library  no loud noises  Shelter  no bitter cold windCEDP 324 Ryan Sain, Ph.D. 7 3/29/2012
8. 8. The procedure  Present the CS as normal.  The CS+ (US)  CR  Red light (danger)  stopping  Present a second stimulus concurrently  CS+, CS-  ______  The CS- signals that no US will happen  Red light, cop signaling  drivingCEDP 324 Ryan Sain, Ph.D. 8 3/29/2012
9. 9. Another procedure CS- is negatively correlated with a US.  Or predicts a long absence of the USCEDP 324 Ryan Sain, Ph.D. 9 3/29/2012
10. 10. Prevalence Fear Causal events Food aversions Emotions FertilityCEDP 324 Ryan Sain, Ph.D. 10 3/29/2012
11. 11. Credits www.sxc.hu  Electricity – gun4hire  Scale – saltoricco  Devil – vikush  Puzzle – lusi Football hit – www.hulsestrength.comCEDP 324 Ryan Sain, Ph.D. 11 3/29/2012