Reviews: Kleinmuntz, Benjamin, (Ed.), Problem Solving: Research, Method, and Theory. John Wiley and Sons, Inc., New York. 1966. $6.95

and causal relationships established. Holland's theory at present, however, does little to acknowledge this. Various learning theories, such as observational theory, operant conditioning and contiguity theory, along with decision theory, do seem particularly relevant to any theory of vocational choice and behavior. Perhaps at some point we can come to more specifically understand the causes of a person's behavioral configuration and how his environment influences his behavior. With such knowledge the Social type, for example, may be assisted in significantly modifying either his "type," i.e., his own behaviors or those types of environments in which he can successfully function. Holland has authored a very readable and well-articulated statement concerning vocational behavior. I t represents a valuable conceptual step in the direction of better understanding the relationships between individuals and their educational and vocational environments. Hopefully, a next step will be to experimentally establish causal relationships which influence vocational behaviors.