This book, which is intended for adult educators and human resource developers, presents guidelines for assessing adult learning. The following are among the topics covered in the book's eight chapters: (1) basic principles of informal assessment (relationship between learning and assessment activities; sequencing learning and assessment activities; basic assessment objectives; assessment principles); (2) assessing the learning process (structuring assessments; selecting assessment techniques; assessing learning behaviors; assessing learning progress); (3) designing relevant tests; (4) making the most of test results (scoring tests; making interpretations about individual learners; grading; identifying skill deficiencies; assessing learning activities; assessing tests; looking beyond traditional tests); (5) achieving authenticity in performance assessments (principles of performance assessments; deciding when to use performance assessments; performance assessment characteristics; measurement instruments; developing assessment instruments; assessing performance assessment programs); (6) mastering performance portfolios (organizing portfolio assessment; effects of learner control; grading portfolios; self-directed portfolios; addressing specific situations); (7) applying assessment strategies (assessment in adult basic education, General Educational Development programs, the workplace, community education, and higher education); and (8) current and continuing issues (coherence among assessment activities; dealing with multiculturalism and diversity; promoting professional development among educators; and maintaining ethical practices). Seventeen figures are included. (Contains 33 references.) (MN)