Social media can be a powerful communication tool for employees, helping them to collaborate, share ideas and solve problems. Research has shown that 82% of employees think social media can improve work relationships and 60% believe it can support decision-making processes. These beliefs contribute to a majority of workers connecting with colleagues on social media, even during work hours.

        Employers typically worry that social media is a productivity killer; more than half of U.S. employers reportedly block access to social media at work. In my research with 277 employees of a healthcare organization I found these concerns to be misguided. Social media doesn’t reduce productivity nearly as much as it kills employee retention.

        In the first part of the study I surveyed the employees about why and how they used platforms like Facebook, Twitter, or LinkedIn. Respondents were then asked about their work behaviors, including whether they felt motivated in their jobs and showed initiative at work. I found employees who engage in online social interactions with co-workers through social media blogs tend to be more motivated and come up with innovative ideas. But when employees interact with individuals outside the organization, they are less motivated and show less initiative.

        In the second part of the study I found 76% of employees using social media for work took an interest in other organizations they found on social media. When I examined how respondents expressed openness to new careers and employers, I found that they engaged in some key activities including researching new organizations and making new work connections.

       These findings present a dilemma for managers: employees using social media at work are more engaged and more productive, but they are also more likely to leave your company. Managers should implement solutions that neutralize the retention risk caused by social media.

        They can create social media groups in which employees will be more likely to collaborate and less likely to share withdrawal intentions or discussions about external job opportunities. Managers can also use social media to directly reduce turnover (跳槽) intentions, by recognizing employees’ accomplishments and giving visibility to employees’ success stories.

解析：A。根据题干中的previous research和题文同序原则，可定位至原文第一段。该段提到，研究表明，82%的员工认为社交媒体可以改善工作关系，60%的员工认为社交媒体可以为决策过程提供支持。A项与此内容相符，其中的Most employees对应该句中的82%和60%，think positively of it对应该句中的can improve work relationships和support decision-making processes，故正确答案为A。

错项排除：B项利用原文中的improve和productivity设置干扰，C项利用connections设置干扰，但这些都不是之前的研究所揭示的内容，故排除这两项。原文中虽然提到了work hours，但没有提到员工在社交媒体上花费了多少时间，故排除D项。