The research project's objectives were: survey of the field, development of new approaches and techniques, investigation of factors in the employment of the trainable mentally retarded (TMR), development of objective measurement of work adjustment behaviors, selective application of new methods, and development of a model vocational evaluation program for the TMR for training. The report reviews the current state of work evaluation for the TMR and research needs. A definition of terms and a bibliography for research are included. The section examining the use of standard tests reviews the validity of the various testing instruments. Work samples and rating scales are evaluated regarding their accuracy. Methodological questions are also raised regarding comprehensive test batteries and interest testing for complete profiles. A review of four articles discusses the TMR as workers. A summary reviews the preceding sections. The conclusions stress the need for: reliable evaluation instruments, further development of the comprehensive test battery incorporating interest tests and sophistication assessment, and improving the rating scale for predicting vocational potential. It was found that standardized tests of aptitude, perception, and dexterity are of little benefit. The identification of test instruments used is appended. A bibliography and index are included. (JB)