Today we will focus on two basic models of learning, classical and operant conditioning. Specific topics include: * Pavlov's classical conditioning and how it might be implemented in the nervous system. Thorndike's law of Effect and its evolution into Skinner's operant conditioning. A model: How operant conditioning operates together with basic motivations as an adaptive mechanism. * Uses and abuses of operant conditioning. * If there is time, we will consider the contributions of behaviorism against its "overclaiming".