Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Tut 3 - lrnng animls
| Term | Definition |
|---|---|
| CC | two stimuli associated NS + US Bell NS + Food US -> Salivation UR Bell CS -> Salivation CR |
| CC elicited behaviour | autonomic passive, reflexive |
| OC | behaviour is strengthened or weakened based on consequences ACTIVE subject ACTIVE performs behaviour to receive outcomes |
| BF SKINNER | SKINNER BOX (OC) |
| SKINNER BOX | OPERANT CHAMBER |
| Operant chamber | lever/bar - press by rat to get food food hopper - delivers food magazine sound - conditioned reinforcer (sound predicts FOOD) stimulus cues - lights, tones for signalling |
| SNIFFY VIRTUL RAT | classical and operant conditioning magazine training shaping reinforcement schedules extinction cumulative recorder |
| sniffy virtual rat cumulative recorder | track sniffy's responses over time (steeper slope = higher response rate) go down to go up |
| MAGAZINE TRAINING | Solve the credit assignment problem help rat learn what action earned the reward how: pair sound magazine (CS) with food (US) |
| how: pair sound magazine (CS) with food (US) | sound predicts FOOD PAIRS = PREDICTIONS |
| dog training analogy (magazine training) | clicker training click CS food US us eventually becomes cs |
| shaping behaviour | technique - reinforce successive approximations of target behaviour steps - REWARD small steps (standing) -> only REWARD LEVER PRESS |
| shaping behaviour broken down | primary reinforcer: food secondary reinforcer: magazine sound (paired with food) anything paired w FOOD |
| Operant conditioning extinction | Reduction in behaviour Reinforcement is removed |
| standard extinction | BOTH food magazine sound REMOVED Behaviour GRADUALLY DECLINES |
| Extinction burst | Initial spike response (frustration) |
| Extinction - REMOVE ONLY FOOD - MAGAZINE SOUND HEARD ONLY | SLOWER extinction SOUND still has reinforcing value initially denial that there is no food (Continues the process) |
| RAT HEARS MAGAZINE SOUND | REINFORCES (VERY MUCH) GRADUALLY DECLINES (slow) |
| Reinforcement schedules | continuous reinforcement CRF partial reinforcement PRF |
| continuous reinforcement CRF | fast acquisition learning rapid extinction continues, FAST LEARNING, FAST EXTINCTION |
| partial reinforcement PRF | reinforce some responses more resistant to extinction partial reinforcement extinction effect PREE - by reinforcing some responses, the responses become more resistant to extinction SOME = NO EXTINCTION (RATS HAVE HOPE) |
| Types Partial Reinforcement PRF | Fixed Ratio (Variable Ratio) - BEST Fixed Interval Variable Interval |
| Fixed Ratio | Reward after fixed number of responses (FR10) High rate pattern and pause after reward Resistance to extinction is moderate |
| VIRTUAL REALITY (VR) (VARIABLE RATIO) | THE BEST |
| Variable Ratio | Reward after average number of responses (VR25) Pattern is high and steady rate Resistance to extinction is very high |
| Fixed Interval | Reward after fixed time (FI30s) Pattern is "scalloped" response Resistance to extinction is low |
| Variable Interval | Reward after varying times (VI60s) Pattern is steady response Resistance to extinction is high |
| Variable reinforcement schedules | Better than fixed reinforcement schedules |
| VR USED | GAMBLING, ADDICTIVE BEHAVIOUR (RESISTANT TO EXTINCTION) |
| OPERANT consequences (4) | Positive reinforcement (good) Negative reinforcement (good) Positive punishment (bad) Negative punishment (bad) |
| Positive Reinforcement | Add pleasant stimulus to increase behaviour Praise after cleaning room |
| Negative Reinforcement | Remove aversive stimulus to increase behaviour Take aspirin to remove headache (Look key words) removing headache (REMOVE) |
| Positive Punishment | Add aversive stimulus to decrease behaviour Burn after touching stove touching stove (ADD) |
| Negative Punishment | Remove pleasant stimulus to decrease behaviour Lose phone for breaking rules LOSE (REMOVE) |
| The four operant consequences | JUST ONE READ SENTENCE |
| Reinforcement | GOOD |
| Punishment | BAD |
| Positive | ADD |
| Negative | REMOVE |
| Second order conditioning | Lever press -> magazine sound -> food |
| Lever press | Indirectly linked to food VIA CONDITIONED REINFORCER (MAGAZINE SOUND) |
| Lever press -> food | use condition reinforcer |
| second order conditioning broken down | useful for shaping complex behaviours |
| standard extinction | food and sound is BOTH REMOVED Fast extinction after burst (always burst) |
| not standard extinction - sound remains, remove food | only food removed slower extinction rat more persistent denial of food removal |
| After PRF (Partial reinforcement schedule) esp VR (Variable ratio) | irregular reinforcement history -> long persistance of behaviour Variable > Fixed Partial > Continuous |
Created by:
brendonpizarro1