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[xmca] Leontiev and Sign


In his letter to Vigotski, A. N. Leontiev wrote about a number of theoretical
that he understood "fundamental". The fifth one touch the problem of "sign".
He said, for instance that "my intuition here is that the sign is the key!"
I think that is very important to recognize that Vygotsky's theory is also
an activity theory, but is there some study that searchs Leontiev's contributions
to "semiotic mediation" theory?

"5. In addition to these it is essential to work out theoretical questions,
directly guiding specific research.
It seems to me that among them belong: (a) The problem of F[unctional]
S[ystems]: “possible” (i.e., something like quantum) I[nter]f[unctional]
relations and “possible” functions of functions (after all a system is not a
spring salad, but something presupposing only the possible, i.e., certain
combinations); (b) Determination of i[nter]f[unctional] relations (the conditions
under which they arise, the process of their birth, factors (= determinants);
here an experiment in their artificial formation is necessary,
that is, a “dynamic argument” is needed, an experiment along the lines of
“ingrowth”). Here, it is necessary to think through the place, the role of
the sign; my belief, or more precisely, my intuition here is that the sign
is the key! Roughly speaking, the first operations with quantities involve
perception, further, the f[unctional] s[ystem] of perception, an
intell[ectual] operation. What has transformed the perc[eption] of quantities—
this simple operation, into a higher intell[ectual] function? The
inclusion of a unique sign—the concept of numbers, that is, the sign, a
medium of intell[ect] (thought!). If this concept is real, then perception,
operations with quantities using it specifically, is also included in a
syst[em] of conceptual thought. This is all very crude and the example
has not turned out successfully (it seems—there is no time to think!);
(c) The problem “intellect–will,” that is, the problem (figuring out the
problem!) of intention (this is already a given!); and (d) personality as a
syst[em] expressed in concr[ete] problems, that is, how it is formulated."
(LEONTIEV, 2005, pp. 74-75)

Journal of Russian and East European Psychology, vol. 43, no. 3,
May–June 2005, pp. 70–77.
© 2005 M.E. Sharpe, Inc.

Thank you.
>From Brazil.
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