Author Question: In a task where the observer compares the weight of a constant comparison stimulus with the weights ... (Read 29 times)

jparksx · **on:** Jun 19, 2018

In a task where the observer compares the weight of a constant comparison stimulus with the weights of a changing stimulus using the method of limits, the interval of uncertainty is operationally defined as

a. the mean of the upper and lower thresholds.
b. the difference between the upper and lower thresholds.
c. the distance between the means of the signal and noise distributions.
d. the mean of the stimulus values corresponding to the last heavier response and the first equal, response.

Question 2

Which manipulation of the time period between treatment conditions reduces the chances of history influencing the results of a within-subjects experiment?

a. shortening
b. lengthening
c. shortening and then lengthening
d. randomly varying the period