title: Unified theories must explain the codependencies among perception, cognition and action.
authors.affiliation: Department of Psychological Sciences, Purdue University, West Lafayette, IN 47907, Electronic mail: proctor@brazil.psych.purdue.edu.
authors.forename: R W
authors.initials: RW
authors.lastname: Proctor
authors.affiliation: Department of Psychological Sciences, Purdue University, West Lafayette, IN 47907, Electronic mail: proctor@brazil.psych.purdue.edu.
authors.forename: A
authors.initials: A
authors.lastname: Dutta