Fredericson, E. (1946). The theory of psychomotion as applied to a study of temperament. Journal of Comparative Psychology, 39(2), 77-89.
http://dx.doi.org/10.1037/h0056608
In the experimental part of this study, 13 rats were observed in an open field. Six temperamental traits consisting of four individual activities (walking, climbing, entry into an open field, and grooming) and two group activities (aggressiveness and gregariousness) were scored and intercorrelated. The theoretical part of the paper presents a "theory of psychomotion" which concerns itself "with an operational description of psychodynamic states in terms of motion," the basic attribute of psychological activity. This theory which is defined as "the quantidirection of qualiform" is then applied to each one of the temperamental traits observed. (PsycINFO Database Record (c) 2016 APA, all rights reserved)