Free-Modulus Magnitude Estimation

From EuroVR Knowledge Base

Description

Free-modulus magnitude estimation is based on the method of magnitude estimation as described by Stevens (1971). Participants are asked to assign any value to a first stimulus, and then assign successive numbers accordingly to following stimuli. The geometric mean of judgments of several participants can then be taken as the psychological scale value, thus producing data on a ratio scale.

Primary Reference or Source

• Snow, M. P., & Williges, R. C. (1998). Empirical models based on free-modulus magnitude estimation of perceived presence in virtual environments. Human Factors, 40, 386-402.