The Rescorla-Wagner Formula (k version) calculator computes the change in strength on a single trial of the association between the conditioned stimuli and the unconditioned stimuli.
INSTRUCTIONS: Enter the following:
Change in Strength (ΔV): The calculator returns the sequential values for change in the strength (ΔV) per trial, of the associate between the conditioned stimuli and the unconditioned stimuli.
Note: The parameter k is bound by zero and one. Therefore it can not be less than zero or greater than one.
The Rescorla–Wagner model describes the changing strength of the relationship between a conditional stimulus (CS) and an unconditional stimulus (US) over a series of trials where the stimuli are paired. In the model, λ represents the actual occurrence of the US and V is the expectation based on the existing associations between the US and the stimuli that precede it. Consequently the difference between λ and V represents the amount of surprise an organism presumably experiences when the US occurs on a particular trial. The constant k can vary from 0 to 1 and represents the combined salience of the CS and US. This constant represents the rate of learning. ΔV is the amount of change in associative strength that occurs on a trial. For each trial, ΔV is added to the value of V at the beginning of the trial to determine the new value of V at the end of the trial. This calculator allows the user to specify the number of trials and it reports the new value of V at the end of each trial. Consequently the user can see the gradual change in the strength of the association across multiple trials.
The Psychology and Statistics Calculator contains useful tools for Psychology Students. The psychology statistics functions include the following:
Domjan, M. (2015). The Principles of Learning and Behavior, 7th edition, Stamford, CT: Cengage Learning