169Toward 2020 with SSAT
However, general AT is only a psychological and philosophical framework “for studying human
performance, although sometimes, it helps in the discovery of a nontraditional method of solving
a practical problem” (Bedny and Karwowski 2007). From the philosophical discovery of Marx,
AT inseparably incorporates human cognition and behavior: “The reection of reality arises and
develops in the process of the development of real ties of cognitive people with the human world
surrounding them; it is dened by these ties and, in its turn, has an effect on their development”
(Leontyev 1978).
As such, human activity is an uninterrupted, never preplanned nor predetermined, but func-
tionally dynamic process that forms a holistic, ...