This panel will consist of a dialogue concerned with peeling back the layers of complex environment-behavior relationships to determine what a science of behavior can tell us about how such relationships occur. Among the phenomena addressed will be memory, problem-solving, rule-following, function-altering operations, verbally-mediated events, cascades of imagery, and verbal composition.? Such phenomenon cannot be analyzed as simple responses under the control of a discriminative stimulus or setting, nor can they be adequately understood at a molar level. Rather, this panel will discuss these problems as programs of behavior under multiple control of both environmental antecedents and other behavior; stimulus control in such cases can be thought of as a web of concurrent influences. Behavior analysis gives us the tools to untangle the web, strand by often covert strand, without appealing the to the mind and internal "causes" such as thinking, perception, memory, and morality, suggesting a truly radical behaviorism.