The abbreviation or command code is listed before each searchable field. Values include childhood, neonatal, infancy, preschool age, school age, adolescence, adulthood, young adulthood, thirties, middle age, aged, and very old. Describes what the document is as opposed to what it is about . Possible choices are general public, juvenile, or psychology professional and research. Terms from the Thesaurus of Psychological Descriptors that describe main focus of document.
Choices are human, animal, male, female, inpatient, and outpatient.
Choices include index, non-English abstracts, references, assessment instrument, and auxiliary materials consisting of audio cassettes, computer software, instructor's manual, study guide, test bank, transparencies, videocassette, workbook, and manual. It is important to include this number on Interlibrary Loan requests to speed up the ordering process. Required for Interlibrary Loan.