This paper discusses some methodological, theoretical and physiological issues to be considered in the use of film tests in research relating to visual cognition and memory. One trouble spot in methodology is the use of a square data matrix with an insufficient number of observations in proportion to variables. A second methodological problem arises from a failure to use the best tools available to determine reliabilities of experimental tests. Another concern is the theoretical problems involved in film test research. Although test authors may define a trait, the designing of a test to measure that trait is not always successful. The final concern relates to the problems of human perception. Care needs to be taken that the observer can see a stimulus nonperipherally in the experimental situation. In short, while the findings of film tests studies remain as interesting as ever, their role in discrimination and prediction will increase only after their practical utility is established. (WY)