This paper highlights the strong resurgence of the discussion on the relationships between brain and behavior from evidence thrown by new techniques and methods of research and measurement in the field of neurosciences. The discussion within the discipline has been directed to the postulation on two levels of analysis: biological and psychological. I discuss that such distinction leads to suggest the existence of new forms of dualism (mind-behavior; brain-behavior, biological-psychological). It defines the psychological field of analysis which does not exclude the consideration of biological components but it is not restricted to them.
Psychological phenomena are better conceived as a continuation from biological phenomena.
Finally, the paper refers to biological correlates of behavior as dispositional factors which can have a catalytic effect on the interaction.