A property which is intrinsic to the field of economics is the idea of aggregation. From the concept of a utility function which arose through the combining of wants or needs to input-output studies the concept of aggregation plays an important part in the study of economic systems-both micro and macro. Even though aggregation plays an important role in economics its explicit use is limited to the manipulation of statistical data. The technique of pattern recognition also involves the problem of aggregation. In fact pattern recognition is aggregation. This is quite obvious when we see that in pattern recognition processes large quantities of data are classified as belonging to various predetermined pattern classes. This paper will deal with aggregation in a particular area of consumer choice by using an elementary idea of pattern reognition The particular problem that we shall be dealing with is that of transitivity in individual decision procedures. We shall approach this particular problem through the idea of a generalized characteristic function of a set–a fuzzy set.