Employing Walker and Avant’s (1995) model and
methodology promotes a systematic approach and, for
the purpose of this analysis, it was successful in
identifying and clarifying the concept. The construction
of cases advocated in this methodology contributed to
more specific and distinct descriptions as opposed to
cases identified from data used in other approaches
(cf. Rodgers, 1989; Schwarts-Barcott & Kim, 1993).