Glossary / Lexicon

Act psychology refers to the type of psychology that emphasizes the study of intact mental acts, such as perceiving and judging, instead of the division of consciousness into elements. It is the name given to Brentano's brand of psychology because it focused on mental operations or functions. Act psychology dealt with the interaction between mental processes and physical events

Other /More definition:
Act psychology refers to the name given to Brentano's brand of psychology because it focused on mental operations or functions. Act psychology dealt with the interaction between mental processes and physical events.