In spite of the several contributions presented above, there are
also a number of limitations to this study, and hence, there is room
for future studies. First, since CMMI samples were collected from
Taiwanese firms, the findings of this study might not be generalizable.
Future studies could be done in other regions. Second, SPI
models include not only CMMI but also other standard SPI programs,
such as ISOs SPICE, the ISO9000 series, and QIP. Since this
study only focused on the CMMI approach, further studies could
replicate and enrich this empirical study by examining other SPI
programs. Third, several characteristics or organizational factors
were not considered in this study, such as industry types and
organizational size, which may have impacted the research model.
Future studies should consider demographic characteristics to
further refine the research model for revealing other angles to the
results. Finally, in this study, the variable of SPI knowledge sharing
emphasized personal intellectual capital, and was operationalized
in terms of knowledge donation and collection. Follow-up studies
could measure the SPI knowledge sharing construct using the
concepts of explicit and tacit knowledge sharing developed by Bock
et al., (2005), as well as detect the impact of specific types of
knowledge on explicit and tacit knowledge sharing in successful SPI
implementation.
In spite of the several contributions presented above, there arealso a number of limitations to this study, and hence, there is roomfor future studies. First, since CMMI samples were collected fromTaiwanese firms, the findings of this study might not be generalizable.Future studies could be done in other regions. Second, SPImodels include not only CMMI but also other standard SPI programs,such as ISOs SPICE, the ISO9000 series, and QIP. Since thisstudy only focused on the CMMI approach, further studies couldreplicate and enrich this empirical study by examining other SPIprograms. Third, several characteristics or organizational factorswere not considered in this study, such as industry types andorganizational size, which may have impacted the research model.Future studies should consider demographic characteristics tofurther refine the research model for revealing other angles to theresults. Finally, in this study, the variable of SPI knowledge sharingemphasized personal intellectual capital, and was operationalizedin terms of knowledge donation and collection. Follow-up studiescould measure the SPI knowledge sharing construct using theconcepts of explicit and tacit knowledge sharing developed by Bocket al., (2005), as well as detect the impact of specific types ofknowledge on explicit and tacit knowledge sharing in successful SPIimplementation.
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