The first research objective of this dissertation is to extend existing conceptualizations of intercultural communication competence to create a new theoretically grounded construct, the Rainbow Model of Intercultural Communication Competence. The second research objective of this dissertation is to utilize this foundation and assemble a new instrument, the 127-item Intercultural Communication Competence Inventory (ICCI). The ICCI consists of sub-scales to measure foreign language competence, non-verbal communication competence, perceptions of cultural distance, intercultural self-awareness, intercultural communication knowledge, intercultural communication skills, intercultural communication motivation, intercultural communication appropriateness, intercultural communication effectiveness, intercultural contextual relationships, and intercultural affinity. This tool is designed assist strategic international human resource management practitioners to find, select, and/or train the best possible candidates for international assignments in an efficient manner.
To accomplish these goals, a quantitative research design has been adopted. In a pilot study and three subsequent studies data was collected between 2005 and 2006 when the ICCI was administered to students in 19 courses with clear intercultural education elements at eleven universities in four countries (New Zealand, Germany, United Arab Emirates, USA) to build four samples of students: self tests (N = 1014) and retests (N = 587), peer tests (N = 613) and retests (N = 529). The ICCI was used as a paper-pencil and an online questionnaire. Using this method is appropriate as it provides intercultural communication trainers with quantifiable results to differentiate candidates and to measure training effectiveness.
This dissertation has produced several research findings. Each of the ICCI sub-scales is psychometrically scrutinized and results described in detail. In exploratory factor analyses most scales have supported their theoretical framework as described in the Rainbow Model of ICC. Most sub-scales show independence from a variety of biases, and demonstrate sensitivity to competence changes over time and differences between evaluators. Various hypothesized links between the scales could be verified. The entire ICCI demonstrated that, despite currently still insufficient sample sizes, its conceptual roots, the Rainbow Model of Intercultural Communication Competence, is recognizable in self and peer tests and retests.
The implications of the findings of this dissertation are threefold: First, the Rainbow Model of Intercultural Communication Competence has received preliminary confirmation. Second, the ICCI has initially shown a tendency to be a practical and reliable tool for recruiting, selecting of, and conducting training needs assessments that facilitate intercultural communication training effectiveness evaluations for suitable candidates for international assignments. Third, ICCI sub-scales have demonstrated the potential to enhance selection and training efforts in a speedy and specific way to support resource-cognizant intercultural training. The reader, however, is cautioned that a variety of limitations of this study need to be acknowledged. Finally, numerous areas of future research are identified.
