879522
| Question | Answer |
| Ideal Matching? | The choice of behaviour of many species on concurrent VI schedules does approximately match relative reinforcement rates |
| systematic deviations from ideal matching | Sensitivity to reinforcement rates and Biases |
| Undermatching | Most common. Response allocation is less extreme than the matching law predicts, e.g., matching law predicts 65% on rich, and 37% on lean, but reality is 54% on rich and 46% on lean. The differences are less pronounced |
| Overmatching | the response allocation is more extreme than the matching law predicts. |
| Factors influencing sensitivity | COD and travel time, overall reinforcement rate. |
| Discriminality of the two response alternatives | more discriminable (red light vs. green) = closer to matching law prediction less discriminable (red light vs. scarlet) = further from matching law prediction |
| Why is undermatching more common? | Perhaps there is a difference in discimination. Or it could be something that is innate? |
| Biases | Preference for one of the matching alternatives in excess of what the matching law predicts A response bias due to things other than the reinforcement rate |
| How to find a bias in your experiment? | You need to do some counter balancing with different variables in the experiment. Put rats in different sides of the room, swap levels reinforcement rate etc. |
| Power law matching law version | Log(Ba/Bb)=alog(Ra/Rb)+logk y m x b m=slope b=intercept |
| Steps to graphing the matching law | Measure the relative responses Plot the y vs. x Find the straight line that represents that |
| The power in the line represents the undermatching/overmatching/matching of the responses to the matching law | a>1=overmatching a=1=ideal matching a<1=undermatching |
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