56 / 372
發言或緘默：心理安全與自我效能在社會資本影響社群網站使用者知識分享行為上所扮演的中介角色
56
.05). Surprisingly, structural social capital has no significant influence on any of the
subsequent endogenous latent variables. Finally, the causal link between knowledge sharing
self-efficacy and knowledge sharing behavior is positive and significant (H11;
β
= .45,
p
<
.001).
Table 3 Standardized Path Coefficients
Path
sign Path coefficient
t
-value
Result
Psychological safety
→
Knowledge sharing self-efficacy
+
.11**
2.01 H1 supported
Structural social capital
→
Psychological safety
+
.13
1.25 H2 not supported
Cognitive social capital
→
Psychological safety
+
.25*
1.87 H3 supported
Relational social capital
→
Psychological safety
+
.19*
2.10 H4 supported
Cognitive social capital
→
Knowledge sharing self-efficacy
+
.46***
4.59 H5 supported
Relational social capital
→
Knowledge sharing self-efficacy
+
.09
.99 H6 not supported
Structural social capital
→
Knowledge sharing behavior
-
.01
-1.10 H7 not supported
Cognitive social capital
→
Knowledge sharing behavior
+
.54***
3.58 H8 supported
Relational social capital
→
Knowledge sharing behavior
-
.13
-1.41 H9 not supported
Psychological safety
→
Knowledge sharing behavior
+
.08
1.38 H10 not supported
Knowledge sharing self-efficacy
→
Knowledge sharing behavior
+
.45***
7.19 H11 supported
Note: *
p
< .05; **
p
< .01; ***
p
< .001.
5. Discussions and Conclusion
The aims of this research were to examine the influences of three constituent
dimensions of social capital (structural, cognitive and relational) on Facebook users’
knowledge sharing behavior and to determine whether users’ perceived psychological safety
and knowledge sharing self-efficacy act as mediators between facets of social capital and
knowledge sharing behavior. Empirically, this article employed a structural equation model
to investigate why people are willing to share knowledge on Facebook, even though such