1. Human Learning
Topic 3: Part 3 Respondent Conditioning Mechanisms
and Function - continued
CEDP 324 Ryan Sain, Ph.D. 1 3/30/2012

2. Extinction
 Passage of time has very
little effect on strength of CR
 Use extinction to remove or
reduce the CR
 Present the CS without the
US
 Remember predictability!
CEDP 324 Ryan Sain, Ph.D. 2 3/30/2012

3. Spontaneous Recovery
 The response returns
 Time between extinction trials will affect this
 The larger the gap the larger the SR
 On each trial you will see less and less SR
CEDP 324 Ryan Sain, Ph.D. 3 3/30/2012

4. Rapid Reacquisition
 Acquisition – extinction – reacquisition
 With each extinction/reacquisition the organism learns the CR
quicker
CEDP 324 Ryan Sain, Ph.D. 4 3/30/2012

5. Credits
 Earthrise – NASA
 Jurassic Park Logo – alumni.utoronto.ca
 www.sxc.hu
 Light - iwd
 Speaker – ba1969
 Dinosaur - bwk
 Express – gun4hire
 Old woman - Luni
CEDP 324 Ryan Sain, Ph.D. 5 3/30/2012