The search for notion: K. Twardowski in the way to antipsychologism
The author considers the evolution of Twardowski’s conception of notion in the context of philosophical psychologism and antipsychologism. On a par with Brentano, Husserl and Frege, Twardowski makes a valuable contribution to the debates on notion, which took place in phenomenology, logic and psychology at the turn of 19 <sup>th</sup>-20 <sup>th</sup> centuries.