Random article: ISM Service Index
Service Index published by the Institute for Supply Management represents results of surveying service managers, which serves the basis for conclusion about development tendencies of this branch. The value below “45-50” reveals negative tendencies. However, often the value is more influenced by psychological factors than real state of business. This is explained by constant speed of changes in the process of service consumption, whereas surges in index value take place exactly because of psychological factors. Such sharp fluctuations are considered in analysis of index value.