Class Notes (808,754)
Canada (493,378)
Psychology (6,022)
Psychology 1000 (2,406)
Dr.Mike (1,197)
Lecture 17

Psychology 1000 Lecture 17: nov 22 lec

4 Pages
Unlock Document

Western University
Psychology 1000

Psychology 1000 November 22, 2016 Learning II Questions to be Answered: ➢ Factors affecting conditioning ➢ Instrumental model What are the factors that influence conditioning? ➢ Law of effect What is the difference between classical and instrumental Next time: cognitive approach conditioning? Scan: p. 245-249; 255-264 How is behaviour maintained by its consequences? Discussion opened: Due December 2 nd Acquisition Curves: Response strength 1. Latency (CS – CR) o Over trials it gets shorter and shorter (this curve is negatively accelerated- it flattens out- you learn more at the beginning then at the end) 2. Output measure o Negatively accelerated Temporal Contiguity: 1. Forward pairing- present CS before the UCS 2. Simultaneous pairing- present CS and UCS at the same time 3. Backward pairing- present CS after the UCS • forward pairing is best with CS- UCS with an interval of about 0.5 seconds between o CS acts as a cue Higher Order Conditioning: • Pair primary CS with another neutral stimulus (secondary CS) • Not very effective…CS-UCS is no longer reinforced • The CR extinguishes- it stops; it fails to be produced Extinction: • CS no longer paired with UCS • Decrease in response strength • CS loses cue value • Note: 1. index of strength 2. CS-UCS bond not unlearned- isn’t there anymore “savings” & spontaneous recovery- for savings what happens we put you into extinction and I’m going to try to train you again from beginning. What happens the second time is that you learn it faster and in fewer trials. Spontaneous response we put you into extinction and then months later you are out later and the response kicks back in (response is hidden/masked) Generalization: • Degree of responding to stimuli similar to training stimulus • Generalization gradient- the most responding is to the mode you were most you were trained on but you will still respond to other loudness • Afraid of snakes- things like ropelike, pictures of snakes (it’s generalized, anything that resembles it at all) • Ex. Human sight vs. hawk sight- see how fine tuned Instrumental or operant conditioning… • Thorndike vs. Skinner Instrumental: ➢ Thorndike ➢ Association of a stimulus and a response ➢ S-R bond is strengthened by reinforcement law of effect ➢ Award animal- gets stronger ➢ Punish animal- gets weaker ➢ Model: 1. Stimulus situation - dominant response (learned over time, biological concept- scratch at bars) 2. Choose and reinforce some target response - want to do something- want to push lever - dominant response changes the animal will walk down
More Less

Related notes for Psychology 1000

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.