A microgenetic analysis of the Tetris' solution by two female college students was carried out with a Piagetian approach. The individual and videotaped procedure included pre-evaluation of possibilities,Tetris sessions and self-evaluations. One focuses on Participant-1 (P1), whose evolution provided more understanding about the solution process. In the pre-evaluation, P1 revealed a formal thought. Her Tetris' domain showed improvements in the construction of possibilities- game understanding, strategies and solutions - subordinated to the equilibration and dialectic thought, with mutual influences between her Tetris', resolution's and results' representations. P1 exhibited III-Level final solutions, but more elementary initial possibilities and mistakes than hypothesized to a person with formal thought. In contrast, she constructed more encompassing and complex interdependences than predicted. When solving the Tetris, it was as if P1 were remaking the cognitive evolution course, with progress projected on her top-level cognitive structures.
Possibilities and dialectic thought; cognitive microgenesis; computer game; college students
