Preface; About the author; 1. Introduction; 2. Drawing valid inferences I: internal and external validity; 3. Drawing valid inferences II: construct and data-evaluation validity; 4. Ideas that begin the research process: sources and guiding concepts; 5. Experimental research: group designs; 6. Control and comparison groups in experiments; 7. Observational research: case-control and cohort designs; 8.

Single-case experimental research designs; 9. Qualitative and mixed methods research; 10. Assessment: selecting measures for research; 11. Assessment: types of measures and their use; 12. Special topics of assessment; 13. Data evaluation: null hypothesis significance testing; 14. Data evaluation: presenting and analyzing the data; 15. Data interpretation: cautions, 'negative results' and replication; 16.

Ethical issues and guidelines for research; 17. Scientific integrity; 18. Communication of research findings; 19. Closing comments: guidelines for a well (and quickly) designed study; Glossary; References; Name index; Subject index.