The purpose of this manual is to provide supplemental information and to serve as a general resource for practitioners involved in the developmental and educational assessment of young children. The first section focuses on the process of assessing young handicapped children and includes specific information on indicators of potential problems in young children, parent involvement in the assessment process, guidelines for interviewing parents, guidelines for assessing young children (with suggestions regarding specific types of handicaps), and a suggested format for writing evaluation reports. The second section provides an annotated list of selected assessment instruments from the various professional fields of psychology, special education, speech and language pathology, occupational therapy, physical therapy, and early childhood education. Instruments listed concern cognitive development; visual perception; and fine- and gross-motor development; communication; adaptive behavior/self-help; and social, emotional, and personality development. Also included are citations for educational assessment measures, developmental checklists, and parent assessment instruments relating to need for information and assistance, assessment of change or progress, and reaction to program services. An annotated listing of parent assessment instruments is offered in the third section. The fourth section consists of a selected listing of resources available for further information and for technical assistance. (RH)