Suchergebnisse

PurposeAlthough social media is widely used for organizational communication, studies have begun to show its controversial effects on job performance in the workplace. To investigate these effects, this study developed a conceptual framework for how social media interactivity affects communication quality and work interruption, as well as how such effects impact job performance.Design/methodology/approachThe proposed theoretical model was empirically validated through a survey study of 556 employees in China.FindingsThe results verified a social media interactivity paradox that indicated social media interactivity increased both communication quality and work interruptions. The results further showed that high levels of social media dependency were a detriment to organizations.Originality/valueThis study verified the existence of a social media interactivity paradox in the use of social media for workplace communication. Moreover, results revealed that the effect of social media interactivity on organizational outcomes depends on its respective dimensions.

OBJECTIVE: Confirmatory factor analysis (CFA) has previously been employed to examine the latent factor structure of posttraumatic stress disorder (PTSD) symptoms with mixed results. A limited number of studies examined PTSD factor structure among veterans of recent military conflicts. This study examined the relationship between PTSD factor structure and the hallmark conditions of these conflicts, mild traumatic brain injury (mTBI) and close-range blast exposure (CBE). METHOD: The fit of previously-proposed PTSD factor models was compared in a cohort of 387 combat-exposed veterans, with stratified analyses comparing factor structure models between those with a history of military-related mTBI and CBE (n=106) and those without either of these antecedents (n=151). CFA were conducted using criteria from the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV). RESULTS: The 4-factor emotional numbing (EN) model yielded the best fit when using a clinician-administered assessment of PTSD symptoms regardless of mTBI/CBE exposure status. However, when using a self-report measure of PTSD symptom severity, the EN model yielded best fit for those with mTBI/CBE exposure history while the 5-factor dysphoric arousal (DA) model was preferable among combat-exposed veterans with no history of mTBI/CBE exposure. CONCLUSIONS: Factors including mTBI and blast exposure and type of assessment tools must be considered when determining preferable PTSD latent factor structure models.