external factors of firms. However,

external factors of firms. However, prior research has limitations which are
as follows. First, prior researchers did not identify the effect of
commitment on transportation services. Commitment is one of the
important factors which has an effect on performance like transportation
services. Second, prior researchers did not find moderated variables on the
relationship between commitment and transportation services. These are
regarded as internal orientation as an internal factor and market orientation
as an external factor. Third, prior research approaches the relationship
between commitment and performance from the viewpoint of causality.
However, performance is affected by internal and external factors of firms.
These various factors could mediate the relationship between commitment
and performance. Internal orientation from the internal viewpoint of firms
can be explained by collaboration between departments, work standardization,
and process improving and they have a positive influence on performance. In
addition, market orientation from the external viewpoint of firms can be
explained by intelligence generation, intelligence dissemination, and
responsiveness and they have a positive influence on performance. As a
consequence, internal orientation and market orientation can provide
important implications on the relationship between commitment and
performance. Particularly, verifying moderating effects of the two
orientations on the relationship between commitment and transportation
service as performance of the forwarders is to suggest important
implications to improving transportation services as core competence.
Therefore, the objectives of this research are to develop the variables which
moderate the relationship between commitment and transportation services and
to analyze the moderating effects of the variables