Nickerson, Carol A.McClelland, Gary H.2011-05-092011-05-091988Nickerson, Carol A & McClelland, Gary H. (1988). Extended axiomatic conjoint measurement: A solution to a methodological problem in studying fertility-related behaviors. Applied Psychological Measurement, 12, 129-153. doi:10.1177/014662168801200203doi:10.1177/014662168801200203https://hdl.handle.net/11299/104161This paper has three purposes: (1) to develop a methodology based on axiomatic conjoint measurement to accompany the McClelland (1980) fertility decision- making model; (2) to demonstrate the use of the methodology by applying it to the study of a specific fertility-related behavior (contraceptive choice); and (3) to evaluate the usefulness and validity of the model and its methodology for studying fertility-related behaviors. The within-persons methodology developed is contrasted with the across-persons methodology customarily used to test expectancy-value models of behavior. Index terms: Conjoint measurement, Contraception, Decision making, Expectancy-value models, Preference models, Within-persons analysis.enArticle