1. Introduction
2. Theoretical Background
2.1. Social Media
2.2. Social Cognitive Theory and Social Capital Theory
2.3. Tertius Iungens: “The Third Party Who Joins”
3. Research Model and Hypothesis
3.1. The Effects of Individual and Social Factors on Knowledge-Sharing Activities
3.2. Establishment of Tertius Iungens Orientation through Knowledge-Sharing Activities
3.3. The Effect of Tertius Iungens Orientation and Knowledge-Sharing Activities on Job Performance
4. Research Methodology
4.1. Development of Measurement Instrument
4.2. Data Collection and Sample Characteristics
5. Analysis and Results
5.1. Measurement Model
5.2. Structural Model and Hypothesis Testing
5.3. Mediation Effect Test for Tertius Iungens Orientatio
6. Discussion
7. Conclusion and Implications
References