Information Suppression and Status Persistence in Group Decision Making The Effects of Communication Media

This experiment investigated the conditions under which a member with information critical for making the best group decision will positively influence the group's final choice. The impact of two factors on group decision quality, information exchange, and perceptions of influence was examined: (a) status differences among members (equal-status vs. mixed-status groups) and (b) communication media (face-to-face vs. computer-mediated communication). Three-person groups were composed such that the critical information required to make the best decision was given only to the low-status member in the mixed-status groups and randomly assigned to one member in the equal-status groups. The results indicated that the mixed-status groups made poorer decisions and made fewer references to critical information than equal-status groups, regardless of the communication medium. Computer-mediated communication suppressed information exchange and the perceived influence of group members, suggesting that the relation between status and communication media is more complex than proposed in past research.     

A mixed‐method approach to sense of coherence,health behaviors,self‐efficacy and optimism: Towards the operationalization of positive health attitudes

Posadzki, P., Stockl, A., Musonda, P. & Tsouroufli, M. (2010). A mixed‐method approach to sense of coherence, health behaviors, self‐efficacy and optimism: Towards the operationalization of positive health attitudes. Scandinavian Journal of Psychology, 51, 246–252. This study discusses the results of a cross‐sectional survey of healthy college students in Poland. More specifically, it describes, explores, and explains the relationships between psychological variables/models such as health behaviors (HB), sense of coherence (SOC), level of optimism (LOO), and self‐efficacy (SE) among college students. These separate constructs have also been used to operationalize a positive health attitude (PHA) as a novel construct. The social survey was carried out at three higher education institutions in Poland in January 2006. The random sample of 455 undergraduate students was taken from five different faculties: Physiotherapy, Physical Education, Tourism and Recreation, English Philology and Polish Philology. Four reliable and validated research tools were used to collect the data: Juczynsky’s Health Behaviour Inventory (HBI); Antonovsky’s Sense of Coherence Questionnaire (SOC‐29); Schwarzer & Jerusalem’s Generalized Self‐Efficacy Scale (GSES); and Seligman’s Scale (SS). The results indicate statistically significant differences (p < 0.001) between these four variables: for example, the healthier health behaviors the stronger the sense of coherence, level of optimism and self‐efficacy. It was also demonstrated that LOO, SOC, SE, and HB correlate with one another. Finally, these variables create an explicit empirical‐theoretical pattern. All the research results from REGWQ tests, Pearson’s correlation coefficient and cluster analysis suggest the existence of conceptual similarities between these four variables and/or the existence of some broader scientific construct such as PHA. However, this needs to be examined further. These results could be a good indicator for future research among different faculties or age groups.