This study addressed the ill-understood issue of how loyalty develops in se
rvice patrons. Although many theorists hold commitment to be an essential p
art of this process, the link between commitment and loyalty has received l
ittle empirical attention. To address this void, the study first portrayed
commitment's root tendency to resist changing preference as a function of t
hree antecedent processes. Second, this portrayal formed the basis for deve
loping a psychometrically sound scale to measure the construct of commitmen
t. Third, the scale was then used in a mediating effects model (M-E-M) to t
est the commitment-loyalty link. Path analyses found this parsimonious stru
cture to be a significant improvement over rival direct effects models (D-E
-Ms). Results found the tendency to resist changing preference to be a key
precursor to loyalty, largely explained by a patron's willingness to identi
fy with a brand. Implications of these findings for loyalty's development a
nd research are explored.