Wilson, Allan2024-08-152024-08-1519701970https://hdl.handle.net/1828/20147A complex stimulus situation was employed in a variation of the reversal-nonreversal paradigm. Adult hUJ11an subjects were given simple and complex forms of reversal and nonreversal shirts to perform on a four-dimensional, two relevant dimension problem. It was found that a simple reversal was more readily performed than a complex reversal, and that a complex nonreversal was more readily performed than a simple nonreversal. A replication, incorporating an evaluation of experimenter bias, verified the initial findings. Explanation of the results in terms of the Kendler & Kendler (1962) two-stage med­iation theory and the Zeaman & House (1963) attention theory was shown to be impossible without modification to the theories.50 pagesAvailable to the World Wide WebThesis