The Method of Adjustment, devised by G.T. Fechner, is one of the three classical psychophysical procedures used to examine perceptual performance.
It came to fame through early studies of visual illusions. But, unfortunately, it is rather difficult to find recent publications in which it was used. Other methods, such as forced-choice procedures, are much more popular nowadays.
- Is there a research field in which the Method of Adjustment is still frequently used, or is even the prevalent psychophysical procedure?
- Where can I find recent publications about this method?
I know that "recent" is imprecise, but I would say that fifty-year old publications do not count as recent, anymore.
Update (Description of the Method of Adjustment)
The Method of Adjustment, also called Method of Average Error (Guilford, 1954), is used to psychophysically measure a subject's accuracy and precision in matching (subjectively equalizing) stimulus magnitudes.
Typically, subjects are asked to adjust the magnitude of a variable comparison stimulus (Co) until it subjectively equals the magnitude of a fixed standard stimulus (St). This is repeated several times$-$per St as well as for different St's. As a result, one obtains for each St a distribution of Co's. Descriptive statistics of these distributions, such as the mean and the standard deviation, are used to compute the point of subjective equality (PSE) and the difference limen (DL).
A measure of accuracy is the constant error (CE), i.e. the difference between the PSE and the St. A meaure of (relative) precision is the Weber fraction (W), i.e. the ratio of the DL and the St.